BPI credit card account closed

I would like to seek an advise about debts in credit card. I hope i can have an idea about credit cards. What if i already settled my account then the bank allowed to have a transaction because it was in an auto debit transaction before, do i really have to pay the bank though i already closed my credit card? And im not attending anymore into that gym do i really have to pay it? kinukulit ako ng bpi na bayaran ko dw ung auto debit na ginawa ng fitness dati samantalang kya ko nga sinarado na ung account para di na makapag auto debit ung fitness...Pls i need an advise...thanks in advance...