You pay more than what you are quoted

In 2011 my service was in arrears, but up to date by Dec 2011. The service was suspended but not re-instated after bringing it up to date. I was unable to get an explanation and asked if I could cancel the contract. I was quoted an amount at Ceres, agreed to this and was billed in Jan 2012. In May 2012 I received a demand for much more which never reflected on any statement. <br> <br> Account was settled and I received a ZERO balance statement from Vodacom.<br> <br> A year later on 22 November 2013 I received a final demand from VVM Debt Collectors and a few days later a SPECIAL DISCOUNTED SETTLEMENT OFFER from the same. Still unable to get proper assistance from Vodacom and out of desperation I paid and informed VVM of such. I have complained to the National Consumer Commission and ICASA but am unable to get any action from either.<br> <br> Now Nimble Collection Services phones me almost daily and won't listen to any explanation or reason. I can not except that I have to pay more than I was quoted and would not have cancelled if I was quoted the amount I already paid.<br> <br> I app**** for credit and was informed that I am blacklisted by Vodacom. So this now also affects my credit rating