Bad Customer Service - Can it get worse than this?

I joined Telkom on the 8th May 2015 to obtain the iPhone 4s deal. First payment went through then I received an sms on the 18th July stating that my mobile account is overdue as the debit was bounced of payment of R398.21 then 20th July services were suspended .I work at a bank and one of the requirements is that my credit rating has to be clean and excellent so I failed to understand why there were payments overdue ? My daughter went to a representative at Pinetown and she was advised that the reason why they did not debit from my account is because the billing department has issues and we are not the only one so she made the payment for me and spoke to a manager and requested to cancel my debit order and provided me case number of ***7 by an agent Hlengiwe and Usibia and both never advised me that they never cancel debit orders but they made arrangements for me to make EFT payments from my account as they provided me bank details . On the 25th September I received an sms stating they will debit R195.21 I called on the 29th September and they said they will never debit my account as it is in credit but actually they debited full amount and it bounced .