Telkom, what will it take for you to resolve my query?

I have logged a complaint two weeks back, I was debited on the wrong date - monies were taken off my account without my consent and I would like to understand why this is so. I have written confirmation from the consultant that all was in order. Telkom say they responded to my last Hello Peter complaint but I don't have any correspondence to back this up.

I would like to change the debit order date again but don't trust the follow through based on this last experience.

Please help?