Poor customer service

We have been having the same issue every month with the internet that just kicks off in the middle to the end of the month. The last two months our premium has been increased by R100.00, which wasn't agreed upon. We have contacted them numerous times, that even the consultants say they don't know why it's been increased and that they can't help us. Up and until today we still have no answer, and no one has even responded to my emails I had sent, in return I only get a unresolved ticket number.