Bad service from Telkom

My uncapped adsl line gets throttled every month by Telkom. so I go into the N1 City store to request an shaped line, they tell me they do not offer that service. however what they dont tell you when you get the uncapped adsl package is that you are only allowed to use 85 giggs for the month after that they throttle your line.and expect you to pay full price. then I requested them to cancel my data as I went to MWEB (WHO OFFERS YOU 200 GIGS A MONTH FOR THE SAME PACKAGE FOR LESS MONEY) THEY STILL HAVE NOT CONTACTED ME YET (tELKOM) NOW I CANNOT USE MY INTERNET OR MAKE CALLS AS THE 2 lines are crossing and causing interference. I have tried calling and emailing to no avail.