Unjustified debit order

I'm a former member of sports and fitness club in alberton, my contract ended last year and I'm challenged by the fact that the gym still deducts money from my account even though I've never been to the gym since last year in march after the president announced the lockdown, and they were still deducting the full amount and when I reverse the debit order they threaten to ********* as they were given permission by the government to deduct money even though we're on lockdown and my contract is finished, can someone please talk sence to the management of the gym not to force us to come to the gym as its not safe and unaffordable anymore