From bad to worse

Okay, here we go again. It works like this: You log a fault, they send someone to the "box". Technician phone you to tell you problem solved or he cannot find anything wrong. Fault marked as resolved. Then, log another fault, same story. Technician anyway said my existing line cannot handle 10Mps as per my contract. Yesterday I received a call from Telkom, telling me my line is now upgraded to 10Mps. Whilst on the line with them, I said let me test it first. Guess what? 0.56Mps. That was around 14h00 yesterday. Last night, 0.26Mps. This morning - 0.00Mps - dead.... For more than a week now, someone from sales would have phoned me to discuss the way forward - NOTHING as I expected....!!!