Non existing after sales service

I have recently renewed my contract with Telkom mobile which turned out to be a huge mistake. The agent confirmed everything, as I wanted it to be, and then while away on business I couldn't make any phone calls anymore. I struggled for 5 days to get hold of a person to speak to, and they were not helpful at all. At that stage I had a massively huge problem because I was unable to use my phone. I am now back at home trying to figure out what to do, but keep getting zero assistance from their side. I would definitely NOT recommend Telkom mobile to anyone. The only reason for the 1 star rating, is because zero wasn't an option!