I'm upset with my mom after she called a place I owed money to
What made your mother call up people that you owed money to?
She's a bitch. That's why.
I can understand that you are upset about a parent interfering in your affairs but you should still pay the money that you owe. Otherwise no one will want to loan you money again.
I'm going to pay them back with the money I owe my boyfriend.
It's not good to pay your debts with your partner's money. Your partner can get upset with you and it will lead to problems with your relationship. Maybe you should set up a payment plan with they people you owe money to so that you can pay off the debt with time.