Failure to cancel zone fitness gym membership

I decided to join the gym not knowing that we will face the covid pandemic and besides the contract was ending soon. While on lockdown with no use of zonefiness services they kept deducting monthly payments, as the contract was close to an end I called to cancel my membership even spoke to the gym reps about the process of cancelling my membership as I wont be needing their services no more I was told they will return back to me until today they have not done so. I later contacted the debtors of the company explaining that due to this pandemic I have lost my job and now I am unable to pay but because the contract is ending I would like to cancel it sooner again i was told they will get back to me as we are on lockdown level 5, bear in mind I joined the gym in 2019 contract had to end in 2020, the debtors later reply that I cant cancel the contract i then have to find someone to take over my membership, who would wanna gym in this pandemic I explained that I worked as a domestic worker I lost my job just like that I cant even afford to pay my childs school fees I have to make ends meet for my child to be at school and get his report, I tried canceling the contract earlier but I was never helped now I'm hit with a letter from the sheriff, what do I do? Where do I get the money to pay I'm no longer working and with no income at all...this is an unfair treatment from zonefiness gym