No service

So my ADSL is not working, or wait, it does sync, but almost no data is coming through. It is UNBEARABLE. I'm talking slower than a 56k modem. Webpages take 5 minutes to load and I have to continuously refresh pages to get them to load. I have tried 5 different ISP's so yeah, it's my line. I have logged faults and so many times have I phoned and asked for the technician to come out and fix my line. The last straw is I don't get any feedback on my fault that I logged, and when I did call them 2 weeks ago they PROMISED me the technician would come out last week. I am still waiting... Paying months and months now for a USELESS adsl line. Please just come and fix it.