Poor service no feedback

Hi I have been paying for a 10meg ADSL line from Telkom but have never even got more that 3 meg on a very very good day with average on 2 meg and below. So migrated to LTE on there special. BIG Mistake. Get slower speeds at times not even 1 meg download. I stay in the Weltevredenpark and had a LTE technician come from Telkom who spent 30 mins checking something and then said someone from Telkom would contact me. It's been over a week and not even a SMS or call to say they still busy. I have called the call centre everyday and they just say\ sorry for the inconvenience and I must just wait"if you ask to be put through to a supervisor the reply is please hold and then you wait and no one but no one picks up the call. Problem is that Telkom has cancelled My ADSL and now I am stuck with even worse service and no one to assist. """