Fifth Third Bank Stole my money and called me a Liar Yorkville IL Illinois

I frequently would do cash deposits an the ATM since its was convenient for me.  One day the machince shut down in the middle of my transaction .  After about 10 min of waiting I went into the branch and they told me there was nothing they could do but if i call the dispure number they would see that the machine was over and put the deposit in my account.  They credit my account that day and then a month later took the money back. I called then and they told me the machine wasn't off.  I asked them if I would have been given to the preson who came after me and then told me it was impossible.  They could see me on camera doing a transation and I know they could see in their system that I selected deposit after I entered my pin.  After arguing with the Rep for 15 min ( he basically called me a liar) I asked for a supervisor who told me to reash out to the branch manger because they get daily ATM Reports to see if he had something different then what they had.  Well, he did find that his report showed that the machine was off $40 instead of the $60 I deposited, which at this point I was will to let the $20 go.  Well, it's been almost two weeks since they received the documentation from the branch manager and they still haven't put the money back in my account and everytime I call they have an attitude and tell em they have up to 14 days to resolve the matter (today is the 14 day).