diff --git a/src/contracts/getContractAddresses.ts b/src/contracts/getContractAddresses.ts
index 48645ed..be6a615 100644
--- a/src/contracts/getContractAddresses.ts
+++ b/src/contracts/getContractAddresses.ts
@@ -3,7 +3,7 @@ import { ContractName, SupportedNetwork } from './types';
 const addresses: Record<ContractName, Partial<Record<SupportedNetwork | string, string>>> = {
   Vault: {
     [SupportedNetwork.BASE_GOERLI]: '0xE2386C5eF4deC9d5815C60168e36c7153ba00D0C',
-    [SupportedNetwork.BASE_SEPOLIA]: '0x18196CCaA8C2844c82B40a8bDCa27349C7466280',
+    [SupportedNetwork.BASE_SEPOLIA]: '0x3d35807343CbF4fDb16E42297F2214f62848D032',
   },
   MultiStaticcall: {
     [SupportedNetwork.BASE_GOERLI]: '0x5226c32C94acdd44743FC5c376582d6782FA7592',
@@ -19,18 +19,18 @@ const addresses: Record<ContractName, Partial<Record<SupportedNetwork | string,
   },
   Currency: {
     [SupportedNetwork.BASE_GOERLI]: '0xee2bDAE7896910c49BeA25106B9f8e9f4B671c82',
-    [SupportedNetwork.BASE_SEPOLIA]: '0x5d0583Ef20884C0b175046d515Ec227200C12C89',
+    [SupportedNetwork.BASE_SEPOLIA]: '0xB8747e5cce01AA5a51021989BA11aE33097db485',
   },
   Feed: {
     [SupportedNetwork.BASE_GOERLI]: '0x970066EE55DF2134D1b52451afb49034AE5Fa29a',
-    [SupportedNetwork.BASE_SEPOLIA]: '0x94D80B2EA3cda86bF350DD7860e1171701F284c8',
+    [SupportedNetwork.BASE_SEPOLIA]: '0xFBD26B871D55ba56B7a780eF1fF243Db7A3E81f4',
   },
   USDC: {
     [SupportedNetwork.BASE_GOERLI]: '0xF175520C52418dfE19C8098071a252da48Cd1C19',
     [SupportedNetwork.BASE_SEPOLIA]: '0x036CbD53842c5426634e7929541eC2318f3dCF7e',
   },
   Rate: {
-    [SupportedNetwork.BASE_SEPOLIA]: '0x774843f6Baa4AAE62F026a8aF3c1C6FF3e55Ca39',
+    [SupportedNetwork.BASE_SEPOLIA]: '0x00A0BcB0e2099f4a0564c26e24eBfA866D3235D6',
   },
 };
 
diff --git a/src/services/vault.ts b/src/services/vault.ts
index b0e9629..3eb9417 100644
--- a/src/services/vault.ts
+++ b/src/services/vault.ts
@@ -74,34 +74,14 @@ const collateralizeVault = async (
   transaction: Transaction,
   internal: Internal,
 ) => {
-  const abiCoder = AbiCoder.defaultAbiCoder();
   const collateralAddress: any = getContractAddress(collateral, chainId);
-  const vaultContractAddress: any = getContractAddress('Vault', chainId);
-
   const _amount = BigInt(amount) * BigInt(1e6);
 
-  // encode
   // build transaction object
-  const to: any = getContractAddress('VaultRouter', chainId);
-  let iface = internal.getInterface(VaultRouter__factory.abi);
-
-  const packedOperations = ethers.solidityPacked(
-    ['uint8', 'uint8'],
-    [VaultOperations.ERC20_TransferFrom, VaultOperations.DepositCollateral],
-  );
-  let encodedParameters = [];
-
-  encodedParameters.push(
-    abiCoder.encode(
-      ['address', 'address', 'uint256'],
-      [vaultContractAddress, collateralAddress, _amount],
-    ),
-  );
-  encodedParameters.push(abiCoder.encode(['address', 'uint256'], [collateralAddress, _amount]));
-
-  console.log(encodedParameters, 'encoded parameters');
+  const to: any = getContractAddress('Vault', chainId);
+  let iface = internal.getInterface(Vault__factory.abi);
 
-  const data = iface.encodeFunctionData('multiInteract', [packedOperations, encodedParameters]);
+  const data = iface.encodeFunctionData('depositCollateral', [collateralAddress, owner, _amount]);
 
   const txConfig = await internal.getTransactionConfig({
     from: owner,
@@ -130,8 +110,8 @@ const withdrawCollateral = async (
 
   const _amount = BigInt(amount) * BigInt(1e6);
 
-  const to: any = getContractAddress('VaultRouter', chainId);
-  let iface = internal.getInterface(VaultRouter__factory.abi);
+  const to: any = getContractAddress('Vault', chainId);
+  let iface = internal.getInterface(Vault__factory.abi);
 
   const maxWithdrawable = await vaultGetterContract.getMaxWithdrawable(
     vaultContractAddress,
@@ -144,14 +124,14 @@ const withdrawCollateral = async (
   if (Number(amount) > Number(formattedMaxWithdrawable.toString())) {
     throw new Error(' Withdrawal amount is more than available collateral balance');
   }
+  const recepientAddress = owner;
 
   // build transaction object
-  const data = iface.encodeFunctionData('multiInteract', [
-    [vaultContractAddress],
-    [VaultOperations.WithdrawCollateral],
-    [collateralAddress],
-    [owner],
-    [_amount],
+  const data = iface.encodeFunctionData('withdrawCollateral', [
+    collateralAddress,
+    owner,
+    recepientAddress,
+    _amount,
   ]);
   const txConfig = await internal.getTransactionConfig({
     from: owner,
@@ -192,15 +172,16 @@ const mintCurrency = async (
     throw new Error(' Borrow amount is more than available currency borrowable');
   }
 
+  const recepientAddress = owner;
+
   // build transaction object
-  const to: any = getContractAddress('VaultRouter', chainId);
-  let iface = internal.getInterface(VaultRouter__factory.abi);
-  const data = iface.encodeFunctionData('multiInteract', [
-    [vaultContractAddress],
-    [VaultOperations.MintCurrency],
-    [collateralAddress],
-    [owner],
-    [_amount],
+  const to: any = getContractAddress('Vault', chainId);
+  let iface = internal.getInterface(Vault__factory.abi);
+  const data = iface.encodeFunctionData('mintCurrency', [
+    collateralAddress,
+    owner,
+    recepientAddress,
+    _amount,
   ]);
   const txConfig = await internal.getTransactionConfig({
     from: owner,
@@ -223,7 +204,6 @@ const burnCurrency = async (
   signer: Signer,
 ) => {
   const collateralAddress: any = getContractAddress(collateral, chainId);
-  const vaultContractAddress: any = getContractAddress('Vault', chainId);
 
   const currencyContractAddress: any = getContractAddress('Currency', chainId);
 
@@ -238,17 +218,10 @@ const burnCurrency = async (
   if (Number(amount) > Number(formattedBalance.toString())) {
     throw new Error('Payback xNGN: Insufficient funds');
   }
-
   // build transaction object
-  const to: any = getContractAddress('VaultRouter', chainId);
-  let iface = internal.getInterface(VaultRouter__factory.abi);
-  const data = iface.encodeFunctionData('multiInteract', [
-    [vaultContractAddress],
-    [VaultOperations.BurnCurrency],
-    [collateralAddress],
-    [owner],
-    [_amount],
-  ]);
+  const to: any = getContractAddress('Vault', chainId);
+  let iface = internal.getInterface(Vault__factory.abi);
+  const data = iface.encodeFunctionData('burnCurrency', [collateralAddress, owner, _amount]);
   const txConfig = await internal.getTransactionConfig({
     from: owner,
     to,
diff --git a/test/vault.test.ts b/test/vault.test.ts
index f0ccc53..315dd4f 100644
--- a/test/vault.test.ts
+++ b/test/vault.test.ts
@@ -9,7 +9,7 @@ config();
 describe('Descent Protocol SDK Test', () => {
   let descent: DescentClass;
   let owner = '0x459D7FB72ac3dFB0666227B30F25A424A5583E9c';
-  let vault = '0xE2386C5eF4deC9d5815C60168e36c7153ba00D0C';
+  let vault = '0x3d35807343CbF4fDb16E42297F2214f62848D032';
   let rpcUrl = 'https://sepolia.base.org';
 
   let signer: Signer;
@@ -44,23 +44,29 @@ describe('Descent Protocol SDK Test', () => {
     expect(response).not.toBeNull;
   }, 500000);
 
-  // it('should withdraw usdc from a vault', async () => {
-  //   const response = await descent.withdrawCollateral('50');
-  //   await waitTime(60);
-  //   expect(response).not.toBeNull;
-  // }, 200000);
-
-  // it('should mint xNGN from a vault to an address', async () => {
-  //   const response = await descent.borrowCurrency('10000');
-
-  //   await waitTime(60);
-  //   expect(response).not.toBeNull;
-  // }, 200000);
+  it('should withdraw usdc from a vault', async () => {
+    const response = await descent.withdrawCollateral('50');
+    await waitTime(60);
+    expect(response).not.toBeNull;
+  }, 200000);
 
-  // it('should payback xNGN', async () => {
-  //   const response = await descent.repayCurrency('9000');
+  it('should mint xNGN from a vault to an address', async () => {
+    const response = await descent.borrowCurrency('10000');
 
-  //   await waitTime(60);
-  //   expect(response).not.toBeNull;
-  // }, 200000);
+    await waitTime(60);
+    expect(response).not.toBeNull;
+  }, 200000);
+
+  it('should payback xNGN', async () => {
+    try {
+      await approvexNGN(vault, '30000', signer, descent.transaction, descent.internal);
+      const response = await descent.repayCurrency('30000');
+      console.log(response, 'res');
+
+      await waitTime(60);
+      expect(response).not.toBeNull;
+    } catch (err) {
+      console.log(err?.info, 'error');
+    }
+  }, 200000);
 });