Bad service

Since January I have been calling Telkom to stop my debit orders because Oam no longer working ,and I have been moved from pilar to post,some saying it has stopped.And all to find everymonth they still debit my account.While there's nothing and charge me for R204 for bounced debit order.while I pay cash every month when I can. Iam not working and I said when I lost my job.today I got the girl named Nobukhosi with the best attitude I have ever seen.now she puts me in hold for 45 minutes because I asked to speak to team leader.when I go to store they say call centre should have stopped my debit order long time ago.call centre says the store.other thing is why there are no terms and conditions not disclosed on the contract at the time of signage ir stated otherwise.a big company like telkom can't stop debit orders??????? When you know longer work.I know iam liable to pay my account but i dont work ,don't have account number.