Poor service from Virgin Active

I called in to cancel my membership and the agent said my contract will be canceled on the last day of March 2021. I told them to debit February's amount on the 22nd Feb 2021 and the last payment on the 28th March 2021 but today on the 28th Feb 2021 they debited my account a second time in February. This is unprofessional, I made the neccessary arrangements on my side. I have been penalized by my bank for insufficient funds of R110 on top of the amount that Virgin Active debited. I'm really frustrated and I want a refund.