Internet contract dispute

I signed a 40 gig for R399.00 with Cell C end of Nov 2015. It was a special they had. My Internet was disconnected, due to non payment according to the consultants. I send them my proof of payment twice. After numerous e-mails and calls, I posted it on hellopeter.mobi. Moses from Cell C Social media realises the problem and reconnect my Internet. But still the problem continues - my Internet was disconnected. The root of the problem has not been solved. <br> ***