Poor customer service

I’m disappointed and annoyed with what Telkom has done which might affect my credit rating. On the 25th of Jan Telkom debited as per contractual agreement only to find when I received a letter of demand that the transaction was reversed. I went to a Telkom store to try and resolve the matter and make payment to be told that they are offline and they don’t do payments. Where are we expected to settle our accounts if they themselves don’t take payments? My account has been frozen I cannot make calls on the contract, I’ve opted to cancel the contract as I am disappointed with the service and customer care.