No response on fault logging

It has been weeks now since logging a fault with Telkom. We have had absolutely no response in writing not to mention no one attending to the repair of the fault at all. I am a disabled client heavily dependent on my phone and my internet connectivity for my independence and my income. Unfortunately it seems that Telkom is forthcoming when collecting their monthly bill but not nearly as enthusiastic when it comes to assisting their clients when their service is interrupted/faulty. I am at an absolute loss on how to move forward since I am getting nowhere by following the recommended channels or by remaining civil. It is infuriating when paying clients are simply disregarded and the response of Telkom's employees are dismissive. What are we to do to get the level of service we think we are paying for?