Poor ADSL for 3 weeks

I logged a call with Telkom *** almost 3 weeks ago and I have followed up regularly but to date my ADSL problem remains unresolved. I am now experiencing latency of more than 500ms which makes the service unuseable. The Telkom help desk always tell me my problem is being attended \as we speak"but its clear that this is simply a bald faced lie. The help desk refuses point blank to refer me to anyone who can assist and tell me that I just have to wait. I have been more than generous with my patience and good manners but Telkom - you don't deserve to be in business - your service is shocking and you couldn't care less about your customers."""