Product: Checking or savings account

My problem is with Bank of America at XXXX XXXX XXXX XXXX, XXXX CA XXXX and a scam I fell for. 
I received and email from a name I didn't recogize thanking me for my order. I opened it and was told I had paid {$400.00} dollars for something from XXXX and if I had any questions to call the included number. So I gave him my bank account number and he apologized and pulled up a screen where I was to write in the amount {$400.00} which I did but when I looked up it said XXXX and I exclaimed, I didn't do that. But the fellow I was talking to was extremely distraught and said, OMG, I'm going to lose my job. And I said, just fix it at your end and he said it won't go backwards. I've just given you {$40000.00}! This will be my job for sure. He went on and on and then said, can you do me a huge favour and go to your bank and ask for a chasier 's check for {$39000.00}? My bank is very close and I thought yes, I can do that for him So off I went and I knew I only had {$7000.00} in my checking account, so I wasn't surprised when they gave me the cashier 's check for {$39000.00} because that meant I got my {$400.00} back and he got what he needed. So he said will you please deposit it into XXXX XXXX to XXXX XXXX. The account number ended in XXXX. By now I know him as XXXX XXXX. This was XX/XX/26. 

The next day he called and said, You have to understand this company deals in hundreds of millions of dollars and the least it will accept as a return is {$45000.00}. I so sorry he says, but I need to put your money back into your account and add some more to it so you can take out another cashier 's check for {$45000.00}. I'm not happy but again not suspicious because I know I have {$7000.00} in my checking account. So I go back to a different location at his request, and that should been a red flag, but instead I just thought okay but my account will show up on the screen no matter which location I go to. In XXXX I ask for a cashier 's check for {$45000.00} and they give it to me, no questions asked even though this is not part of my banking history of over 30 years, and I'm elderly, in a power chair. 

Back in the car he asks me to deposit it in XXXX bank. I go to XXXX and this time I make the deposit out to a XXXX XXXX in XXXX. The last four numbers of the account are XXXX. 

When I get home he calls and says, don't go into your bank on line. I ask why not? He says because I'm keeping it safe until these checks go through. Now I'm feeling a bit off and he says I can go onto my computer, just not to the banking app. And he gives me a password to get into my own laptop! I don't have a password, but now I have that is controlled by him!! I then say I am getting the feeling that you are including me in something illegal. But he says, no, no, dear lady, nothing illegal. I say I'm calling B of A and he says, no, please don't, it's just for a little while longer. I say, I'm calling. Then he hangs up and the password he gave me for my computer doesn't work!!! I go to the bank and tell them all this and that's when I find out the {$80000.00} in my savings account is GONE! 

I'm stunned and ask the bank manager if the bank is going to support me with their insurance money and they say no because you did everything willingly.

After a few days, it occurs to me to question, how did these bad guys move my money from one account to another and me not know about it considering I have a two step verification code to get in?