Debited twice after cancelleing contract!

I canceled my gym membership in May 2025 and was told that I would have to pay the full fees (after I moved medical aid companies) for May and for the next month (June) as part of the cancelation process, to which I agreed. In July 2025 and now in August 2025 I have been debited TWICE each month for R1149 each month a total of R2298! I called to query this and could never get through and now again I've been debited again for a gym contract that I've canceled 4 months ago. I want my money back.