Bank of America Debt Collection Complaint

Bank of America Debt collection department,

Credit card Disclosure verification of debt Not given enough info to verify debt New Jersey

I had a line of credit with Bank of America. I left the account at a zero balance when I closed the account. I received a notification that I had a balance. I disputed the account but I was unable to provide proof because it was and old account. I called and I was told that if I pay the full amount that the account will be taken off my credit report. I paid however, I requested all documents with my account activities since I opened the account to verify where the error was and to proof that it was my mistake or not and I have not yet rcvd the documents and the account it 's still on my credit report. I called again and I was told that it will remain in my credit report for 7 years for an amount of $71.00. Please help.