FIA Card Services-Withdrawing money from my checking account at Chase unauthorized and not owed

After paying my Bank of America credit card bill in total, I found out that another payment of an exact amount in dollars and cents (an odd amount but which was the amount for Bank of America) was taken out electronically by FIA Card Services from my checking account at Chase.

Bank of America denied receiving two payments for that amount, only the one I mailed in. A few days later, I received a letter from Chase saying the debit from FIA was removed. But a week and a half later, 9/22/2010, the same amount, again was taken out of my checking account by FIA and again I have to fight them arbitrarily taking money from my checking account which was not owed.

I never had a card which said FIA. I have been paying my bills at Bank of America completely. I ordered a credit report today.I discovered that FIA made a formal inquiry about the amount on my credit cards shortly before they started making their withdrawals from my checking account. What can I do to stop them (they never had my authority to withdraw money), I owed nothing to Bank of America, and this is clearly fraudulent. Bank of America still claims it was paid only once, but nearly $1,000 is still missing from my checking account taken by FIA, their subsidary. I don't want to pay this month's bill if Bank of America doesn't acknowledge that it owns FIA. The same address and the same phone number is listed for Bank of America and FIA on a Trans Union credit report. Can I do this? Who can I report this to?