Gym taking money even after termination of contract.

We cancelled our contract end November '17. Yet, to this day every month on the 24th they deduct R438...they won't cancel their debit order and they don't make an effort to return our money as we cancelled our contract months ago!!! Please stop taking what is not yours!! Deeply disgusted with Training Edge/Edge Fitness Jeffrey's Bay. Stop taking money if we ended our contract!