telkom mobile POOR SERVICE

I have successfully been using a Telkom MOBILE USB device for over two years but on 25/09/2015 I was blocked by administrator and although I tried everything now cannot connect at all. I have been calling Telkom call centre non stop and been told \they will send an e-mail to Technical Support". A technician came to my home on 7/10/2015 and he was not able to connect though his device could easily connect on my PC. I call the call centre practically daily and am told \""We are waiting for a report from the technician\"" or \"" we will send an e-mail\"". Now on 20/10/2015 I have had enough and think I have been more than patient. I want answers or a replacement. My call reference no. is ***5 my name is Chris. <br> """