Virgin Active *****ing my money AFTER contract CANCELLED

I sent an email on 19 July 2021 to cancel my membership with Virgin Active. I got confirmation that they received my request. Today on 1 September they debit my account with R1200. After sitting on the phone for 45 mins getting through 4 times and each time the consultant puts the phone down on my ear. How can companies be allowed the just debit accounts? Amazing how they are VERY quick to sign your up BUT NEVER quick to process a cancellation OR respond to client queries??