Bad customer service and unfair charges. Not in a contract

I am not happy with Telkom. This thing of charging R200 for rejected deb8t order is unacceptable. It is not in their contract I signed and this is not for the first time. And when i asked for manager was told he is busy. I expected them to debit on the agreed date when i took the contract but that is not happening. Spoke to the agent last who told me when the debit order is rejected I must go and pay at checkers before the 10th of each month and Then informed the agent to avoid the R200 fee. I did that as was shocked why they didn't debit whereas there's money in my account. When I upgraded my contract was told by the agent that R240 will be debited which includes R40 of a router but instead they took R750 which was meant for my funeral cover and when i asked y I was told is for a router whereas the agent said he noted that when i upgraded that i will be debited R240 including the router one. To my surprise Telkom told me i will be contacted after investigations till today no one contacted me. Instead I contacted them. The agents where so rude and not friendly to me as a customer.

Telkom must explain why so much money for rejected debit order. Bcos the banks also charges for that. But their is worse bcos is more than a contract amount