Contract deduction not done due to telkom not saving my account correctly.

I took a contract phone with telkom in September. The first deduction was supposed to be and of October and it was double as they never deducted for September. So when I went to one of their offices I foundout that they didn't capture my account number correctly so I had to go to the bank and deposit the money then gave them the account number again and showed them prove of payment. So I left thinking everything is sorted out. Now again and of November I wait to see their notification, and I find myself in the same situation again. When I call the call centre, I spoke to a lady by the name of Nthabiseng and she informs me that my account was not updated hence they still did not deduct. I am not a bad pay and I hate being late on accounts, I'm even more worried that this will ruin my reputation as a good payer. I put this review here as I feel I have no choice but to lay my complain as I do not have the time to always go to telkom or keep depositing their money whenever there is a mistake. I do hope that this matter will get resolved as I'm not at fault and do not want to struggle everytime with this.