Product: Credit card or prepaid card

As reported in my bitcoin complaint and other credit card company complaint, I connected with someone on XXXX who had a profile as an instructor at the XXXX XXXX XXXX University XXXX XXXX, Florida and who later went on to say that he was being sent overseas again by the XXXX on an undercover assignment for our country. He also said he had made me his sole contact and that his " handler '' would text me information to send to him once he was in XXXX so that he could access the XXXX  account and send money through to my credit cards so I could take out cash advances and send them to him via bitcoins for him to conduct the project he was sent on assignment to do. Money started showing up in some of my credit card accounts and I was eventually sent a " promissory agreement '' on what appeared to be real XXXX letterhead so I went forward with using one of my Bank of America Mastercards for balance transfers and direct deposit/cash advances to one of my bank accounts to be able to send bitcoins to him thinking I was helping not only him but our country. Eventually it became clear that it was a scam after all of the money sent through to my credit card accounts was sucked back out after I sent him the funds and did a couple of other things he asked me to do with the money sent through. I contacted Bank of America about this when I realized that it was likely a scam, saw all of the money he sent through to my BoA card had been sucked out after I did one balance transfer and the direct deposit/cash advances. They told me I am responsible for the debt even though they authorized the release of funds while apparently the money he sent through was still processing. I also sent them the attached letter by registered mail a few weeks ago and have not heard back from them regarding how they would be able to at least reduce the debt and interest being charged, or hopefully release me from being responsible for the cash advances that occurred during the time he was ending funds through and then sucking them back out. The information below is from credit card statements BofA sent and the payments over {$1000.00} shown below, except the XXXX I sent through from my XXXX card account, are the payments he sent through to my account : Transaction date XX/XX/2020 -- Posting Date XX/XX/2020 ... Electronic Payment ( which I sent through from XXXX XXXX {$16000.00} ; Transaction date XX/XX/2020 -- Posting Date XX/XX/2020 Electronic Payment {$10000.00} ; Transaction date XX/XX/2020 -- Posting Date XX/XX/2020 Electronic Payment {$9900.00} ; Transaction date XX/XX/2020 -- Posting Date XX/XX/2020 Returned Payment Unpaid {$9900.00} ; Transaction date XX/XX/2020 -- Posting Date XX/XX/2020 Returned Payment Unpaid {$10000.00} ; Transaction Date XX/XX/2020 -- Posting Date XX/XX/2020 Direct Deposit to my XXXX XXXX account {$10000.00}, Transaction Fee {$300.00} ; Transaction Date XX/XX/2020 -- Posting Date XX/XX/2020 Direct Deposit to my XXXX XXXX account {$8000.00}, Transaction Fee {$240.00} ; Transaction Date XX/XX/2020 -- Posting Date XX/XX/2020 Electronic Payment {$19000.00} ; Transaction Date XX/XX/2020 -- Posting Date XX/XX/2020 Returned Payment Unpaid {$19000.00}.