Unreliable treatment by First National Bank

I complained about the bank not resolving my ***** case and not keeping their promises that a consultant will contact me within 24 to 48 hours since the 4th of November 2020. I made the bank aware of a lady by the name of Seipati who called me before with an offer of half the money I have lost. I have been waiting for a response from the bank and still no one has ever contacted me. I have never filled any forms with the bank to accept the offer but surprisingly an amount equal to the money I have lost was deposited into my account on the 11th of November 2020. This shows how bad First National Bank handles their clients' complaints and I am not going to rest until I get satisfactory answers from the bank. I was not even notified about the final decision regarding the matter. Please help me Hellopeter can one's case be finalized without any agreement. From whose account was this amount. I believe that if I had agreed to sign the forms agreeing to accept the money would have meant that I accept the money and close the case but I never did that.