Poor advise and no response

I have a 2gb contract with 2 sim cards that date back app 8 years. Feb 15, I get a bill of R20 000.00 and was advised to avoid this happening again I should migrate to a top up contract. Taking there advise I did this, not been told that my second sim would now not work. I have been calling the call centre, talking do different people, with no response. The problem is that I have been paying R9 PM for a second sim and it is now R100PM. I logged a complaint, and have a reference number that is 1 MONTH old, with NO RESPONSE.<br> I have since been told that you can cap your data and will have to call to open it for the rest of the month if needed.<br> <br> I spend app R8500.00 per month