Telkom bad service

Telkom service is the worst you can get. I changed my debit order date the first week of June, then Telkom made the July deduction on the wrong date again at the beginning of July, their explanation its that it takes 10 days to put changes into place. It was more than 3 weeks' notice. I paid my account and then they proceed to do another debit order yesterday, so double payment in July. The staff at the Telkom shop next to Game in Eastgate is off no help, it's like they not properly trained to answer customer queries. To dial the 10213 number is even worst because not one of the departments listed is willing to help or tell you who to contact that would be able to assist you. I'm really regretting taking out a contract with them.