Pathetic service - ADSL LINE NOT WORKING

I have been battling with my ADSL line for just over a month. I have logged numerous enquiries and spoken to about 30 agents. A technician has come to check out the line and the router, which was changed to a new router that I had to buy, about 3 times now. Each person has a different excuse. First there's a network problem, then the router is faulty, then the line is busy initializing, then the network is recalibrating...each excuse comes with a better term but my line is STILL NOT FIXED! I AM PAYING FOR A SERVICE THAT I'M NOT GETTING? Being a pensioner, this is completely unacceptable! We got the line for convenience and so that we can use the internet freely at will in the privacy of our home, and yet this has been more of a headache and inconvenience than anything else. At the end of the day the problem is NOT BEING RESOLVED. AND I AM THE ONLY LOSER HERE!!!!! If someone can please just explain to me, in layman's terms, what the issue ACTUALLY is and FIX IT ONCE AND FOR ALL I would greatly appreciate that. Its VERY FRUSTRATING THAT I AM PAYING FOR NOTHING. I'M ACTUALLY PAYING TELKOM FOR A SERVICE THAT I AM NOT ABLE TO MAKE USE OF! Please can someone contact me URGENTLY about this matter.