Telkom's Massive bill.

I am extremely disgusted in Telkom's service as an FSP. I was going through my bank statements and i noticed that Telkom has not debited my account for a few months (cell phone contract). I have not received a single phone call from them to inform me that they were unable to debit. When i inquired with them they just told me about the MASSIVE Bill i must now pay for the line to be reconnected plus additional fees for the debit not being processed. I am still waiting for feedback from Telkom regarding this, I work for an FSP my self and I know that when our clients debit orders are unsuccessful we contact them the same month. I refuse to pay that amount up front as Telkom did not inform me about this issue. I will await feedback from them and I will also be approaching the Ombud regarding this matter.