Service really Sucks

I am receiving very bad services from Cell since day 1. First it was the billing, then it was the handset, with no network. Phone was send to Cell/black berry technicians. Conveniently they found nothing wrong with the phone. This was prolonged until the 6 months guarantee has expired. In the meantime it cost me R480.00 to have it fixed. After that another R180.00 to replace charger input as the phone did not charge. When I took out the original contract the agreement was for R174.56 per month, which was within my monthly budget. In January the monthly instalment was increased to R183.33 per contract X 3. I refer to my telephonic conversation of even date one of the cell consultants. Conversation on 28 July 2014, this is a total *******! As a consumer I feel that an injustice is being done. 3 handsets, not once was it explained or read to me that I tariffs would increase, if and when it suits CELLC. And to top it all, I spoke to a consultant and I told her that I don't want to be surprised with a high bills the end of the month. Your assistance will be greatly appreciated,