No service

I've had a bad adsl line for over month now. I pay for and always had a 4Meg line. Over a month now and my line on a good day will sync at 2Meg. Been logging numerous faults and it will get closed within a day or like the last repair took over 3 weeks.It was closed today and guess what ????Still same problem. Ive even gone as far as buying a new router. Still same problem. Over paying for a ****py line. I pay for 4 meg but most of the days don't even get 2 meg. Ive always had constant 4 meg line so Telkom mustn't even come with stories to say theres no 4 megs available. Also don't come with isp issues. Ive tried 3 different isp's and all of them same issue. When I load my isp at friends house its 4 meg. So once and for all.PLEASE SORT OUT MY LINE. I ALSO WANT A CREDIT FOR THE TIIME I DIDNT HAVE A 4MEG . My phone at home never stops ringing. If you pick up the phone you hear people on the other side and also how people trying to dial a number. This fault was not resolved for the 4th time ive logged THIS ISSUE.DO YOUR WORK PROPERLY FOR ONCE