RSAWeb horrible experience and service

I have had the worst possible experience.Their service is absolutely shocking! I have spent over 150 talk minutes trying to sort out my internet over a 2 week period. After 13 days they were still not able to connect my router. Every day I had to call, each time wasting my time and money. I asked on various occasions for a senior person or manager to call me but no one ever did. Each day I was told that it is now escalated but that did not help. On day 14, I cancelled the contract seeing as they were not able to supply what I signed up for. And now I get an invoice for over R1000 even though RSAWEB could not deliver my internet at all! I phoned this morning but still no one has responded to my emails or calls. I have never experienced worst service! What is a person supposed to do to get help? All I get is another ticket but no help!