If your landlord cashes a rent check a month early and it bounces, should you be responsible for their fees?

I have a Suntrust account that disburses rent checks to the property manager for the first of the month. Back in Dec. on the 24th, Suntrust online said it sent the check early, but there weren’t sufficient funds. Suntrust has mysterious reasons for their online banking to cease working, so I transferred the rent to that account, but wrote a separate check from my primary account as well. I packed it in an envelope and wrote a message to let her know why I did this. So I paid double rent in January. When February came, the property manager cashed the check, but I didn’t transfer the funds to that account, so it bounced. I called and reminded her what happened, then asked her to void and dispose of the check. 2 months later, I get notice telling me I’m responsible for their fee when they cashed my check during the month I already paid for. I don’t know why she didn’t tell me when the situation first happened, but I asked why she doesn’t keep track of who pays early and her response is she has too much volume. Does she go to the bank like Santa Claus with a sack of checks? If she knows who didn’t pay, why doesn’t she know who did pay, and who paid in advance?