No service yet account paid

I have been with Telkom for a while I have a number of contracts with them however all my contracts have been blocked and they say due to spend limits. The debit has come out my account and it’s even more than I should be paying. There is no way of contacting customer service and I can’t call them on any of my 5 contracts that I have it’s now 48 hours with out service and I had to buy data and fog up money just to use my phone.