Fed up member

I am extremely upset, i have been trying to close my account since beginning of 2018 with no luck whatsoever, they just dont get back to you after numerous calls and emails, then suddenly they just hand you over to attorneys even after i settled my account even though i wasnt at fault and didnt have to pay, i paid R534 just to get the account closed. They took money of my account by changing their reference number even after i stopped the debit order. Here my bank said that they can do it because they have my banking details. I spoke to the manager at Moreleta Planet Fitness and he keeps saying he will sort it out but nothing happens and i dont get anything concrete in writing. Up until now it still shows im in arrears and i have send through the proof that my account is completely settled. Im frustrated and i dont know what to do anymore. This actually caused that i will not join any gym ever again.