Billing and accounts in a mess. top up contract not top up

I dont always complain but i have had enough of Vodacom. My contract is supposed to be a tot up contract but I cant load airtime or data. due to this I have a huge bill last 3 months, I pay my account VIA debit order,all of a sudden now they dont take it like that anymore, due to that my account is 3 months in arrears with n huge bill. I have called the call center probably over 10 times now and even went to the Vodacom shop in Centurion.

the shop in centurion sent a email to head office to sort out this mess more than a week ago and i still don't have any feedback whatsoever.