Bank of America Financial Center

We paid our landlord with a $500 check which was deposited at Regal plaza branch. They only credited the landlords account with $300. It has been a month and Bank of America still has not rectified their mistake with either my bank or the landlords account to my knowledge. How does a bank that's held accountable for every penny not know that there was an overage of $200 nor did they look to find the mistake and call the account holder or directly deposit the money into her account????

They only ever 1 teller on Friday afternoons! The busiest time for banking! Ugh!