[BUG] Pro Annual plan changed to Max monthly without authorization — "Gift Max 20X/5X" invoices generated on account

[gigiograndi]

Preflight Checklist

• I have searched existing issues and this hasn't been reported yet
• This is a single bug report (please file separate reports for different bugs)
• I am using the latest version of Claude Code

What's Wrong?

I am a Claude Pro Annual subscriber. Starting April 9, 2026, a series of unauthorized billing events occurred on my account without any action on my part.
Timeline:

Apr 9: Annual renewal charged successfully ✅
Apr 16: A second invoice appeared for "Gift Max 20X - 1 months" — a product I never ordered. Status: Overdue.
Apr 16–19: Repeated Stripe payment confirmation emails for this unknown product.
Apr 19: My plan was silently changed from Pro Annual (valid until April 2027) to Max monthly (expiring May 19, 2026) — without any action or consent on my end.
Apr 19–20: Internal credits and storni applied automatically (−€103.88), duplicate invoices generated.
Apr 20: Two new Stripe emails for "Gift Max 5X - 1 months" — again, a product I never ordered.

Possible trigger:
Anthropic sent me a promotional one-time free credit for extra usage (email received early April). I redeemed the voucher. Shortly after, the billing system began generating unauthorized invoices.
Support experience:

Ticket open since Apr 16 — Conversation ID: 215473937152899
All responses from Fin AI Agent only — no human billing specialist has responded
AI agent initially attempted to process an unwanted refund that would have cancelled my subscription
Chat support confirmed escalation to human specialist — still waiting

Expected Behavior

Pro Annual plan remains active until April 9, 2027
No invoices for products never ordered ("Gift Max 20X", "Gift Max 5X")
No unauthorized plan changes

Actual Behavior

Plan changed to Max monthly expiring May 19, 2026
Multiple Overdue invoices for unknown products
Billing system generating new invoices autonomously with changing amounts
Available credit decreasing without explanation

Related Issues

#41499 — Gift Max 20X proration bug destroying subscription credit
#47290 — Gift subscription silently cancelled, support unable to escalate
#48780 — Double billing and account degraded to Free plan

Account

Email: gigiograndi@gmail.com
Support Conversation ID: 215473937152899
Card on file: Visa ****3750 (empty — no unauthorized charges succeeded)

What Should Happen?

Pro Annual plan remains active until April 2027.
No invoices generated for products never ordered.

Error Messages/Logs

Steps to Reproduce

1. Have an active Claude Pro Annual subscription
2. Redeem a free usage credit voucher sent by Anthropic via email
3. Observe unauthorized invoices appearing for "Gift Max 20X" and "Gift Max 5X"
4. Observe plan changed from Pro Annual to Max monthly without user action

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

N/A — billing issue on claude.ai

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

github_issue_billing.md

[0xbrainkid]

This is far beyond a UI billing-display bug if the reported sequence is accurate. The core issue is unauthorized plan mutation plus invoice generation for products the customer says they never purchased.

That makes this a control-plane integrity problem:

• annual renewal succeeds
• unrelated "Gift Max" invoices appear
• plan changes without consent
• credits/storni are applied automatically
• support remains trapped behind AI triage

Even if some internal promotional-credit or migration workflow triggered the chain, the user-facing result is indistinguishable from account compromise or backend billing corruption.

Billing systems have to be boring and legible. When plan identity, invoice identity, and support escalation all become unstable at once, trust collapses very quickly. This needs human review and a durable audit trail, not just automated explanation.

[kompot-rar]

Same here - charged for gifts I didn't order, and the chatbot was completely useless. It refunded my paid subscription, which I actually wanted to keep, and did nothing to resolve the gift issue.

[gigiograndi]

And this is for today, folks!

[gigiograndi]

Here I am: Case #45335
From here:

to there:

No action from my account, everyday a bunch of payment requests from Anthropic Ireland. Fortunately, I've used a pre paid Credit Card and it's now empty.
They downgraded my annual pro profile, paid in advance directly from Claude.ai, with regular receipt and invoice, first to a monthly Max plan and then, after a few days with a monthly Pro plan (voucher sent by them) they are totally out of control

[PatientQ]

I had to cancel my pro subscription for fear of more charges to my account. I am a student and Anthropic charged my card till overdraft. Multiple Gift Max 5X, Gift Max 20X, and pro gift charges. Claude help says that only my legitimate monthly claude pro charge is eligible for a refund. Anthropic support has failed to react to my emails - My bank is still in the process of reclamation proceedings. I am just at a loss for words.

[classyjoes]

I had to cancel my pro subscription for fear of more charges to my account. I am a student and Anthropic charged my card till overdraft. Multiple Gift Max 5X, Gift Max 20X, and pro gift charges. Claude help says that only my legitimate monthly claude pro charge is eligible for a refund. Anthropic support has failed to react to my emails - My bank is still in the process of reclamation proceedings. I am just at a loss for words.

Did cancellling your plan stop the charges? I just got charged £540 unauthorized @PatientQ