Refund from Cell C

Cell C has consistently been so poor in support for three months. After having spent many years being a loyal customer and always paying my account on time they are refusing to reimburse what is due me. I have been sent from pillar to post to get my money back and on top of they are still debiting from my account when they owe me. Each time I call I am told to log a new case or they need to reach back office, the level of incompetency is appalling. The amount of money, efforts and energy spent trying to resolve an issue they caused is beyond disappointing. How big networks treat the ordinary customer just because they we don't have the power to fight them is unacceptable.