Escalated complaints, no response - I've had it

I recently got an uncapped 2mb line installed .Since the installation we've been having issues. The contractor did not know(and neither did we) that our modem was to be a self install, and eventually he made up a story that our connectivity had to be activated and we'll be good in an hour. This didn't happen. Eventually, I figured out how to set it up myself and our internet became active. Since then, we constantly experience extremely slow speeds (at least once a day for a few hours). The speed drops to below 0.2mb and the ping sky rockets. I called Telkom's call centre, the consultant reset our port and when I restarted my modem I noticed that we still had the issue, he told me I should clear my browser history and that there's nothing else he could do. A while late I called again, this time the consultant was very willing to try and assist us. She booked a technician to check the exchange. A few days later I suddenly get an sms telling me the problem is resolved, It wasn't. It's been weeks now since I escalated a complaint with no response from Telkom, only from the Facebook team who escalated the issue again. I did not sign a contract and am wondering why I'm not switching.