Poor internet service

I am paying Telkom for a service, a service I am not getting.

I have a 4mbps ADSL line from Telkom, as ofmid December I have been having issues with my line with disconnecting randomly as well as very slow speeds (not that 4mbps is fast) I am not even able to start running a speedtest as the pmapplication just hangs. On calling the call center, my line was refreshed and my speed was still ****, I was then duly informed I would be contacted by a technician, not forgetting to remind me that a R350 was payable by me if the fault was my side. The technician calls me to tell me I am on level 1 of my fair usage policy, According to Telkoms online service level 1 affects your speeds between 7pm and 9pm, this technician tells me the system is configured to throttle my speeds whenever. Not in the mood to fight as I had just lost a dear friend after a long illness I said OK, and hung up. My speeds are still sucky and Telkom keeps threatening with a R350 fee "if the fault is on your side" has anyone else had this issue with them? Also, who is a good fibre provider as they have started laying fibre in our area. I am done with Telkom, cancelling my mobile contracts with them as well...