Customer Complaint

I opened my Gym contract with ZoneFittness in February 2020, In March 2020 the Gym closed. When I called the Gym in September 2020 I was told that I'm Seven months in arrears & I must pay my contract since I have a running contract. Now I am getting calls from NBA that I am owing R 6 534 since they bought my account from ZoneFittness. I called ZoneFittness more than Four times to try & resolve the matter by I was helped by a Collections Agent who told me that I have to pay irregardless of the Gym being closed since I have a binding contract with them(ZoneFittness) If I had used the equipment & the Gym was open I would not have objected the payment... ZoneFittness is a very big *******!!!! Why was my account not suspended or frozen when other Gyms did so? I am very disappointed as I feel that my rights as a consumer were violated by ZoneFittness I was at PlanetFittness January this year almost half of the members are from ZoneFittness & they all complaining of the same thing but they don't know where to get help...