ADSL line Chancellation

I cancelled my ADSL line with Telkom due to the fact that they promise you a 2Mbps line but when through my speedtest app I have never gone over 0,71-0,06-0,37-0,10Mbps. This was rediculouse seeing that i was paying for a 2Mbps. I reported this to them (ref 42crk270615). I then migrated my ADSL line (ref***a) to Mweb in October but Telkom is still billing me for the service.<br> I visisted their offices in The Glen shopping centre but battled for 3 weeks for this line to be migrated. Eventually this was done but Im still being billed for the service. I want to expose Telkom for the *****s they are. The call centre staff are the worst, unhelpfull, rude agents who cannot resolve you query anyway, thats if you lucky and have the time to hold on for up to a hour before someone answers you call. I need telkom to correct my invoice and bull you only for the pathetic service you are delivering.