I think we all have our share of problems with those companies!
I moved in with my girlfriend and wanted to move the DSL line with me - no problem.
As allways you have to stay home an entire day for them to drop by during the day.
They came and attached the small DSL port to the wall. So far so good, and here stops the fun!
Before I move on I should tell you that the line used is owned by TDC and the internet company was Cybercity. Thus is was TDC who set up the box.
OK...no connection. Called TDC, they would not transfer my call because Cybercity was my carrier....OK called Cybercity, got right through to a skilled tech. He could not see where the problem was at their end, so they called TDC to log the problem. TDC called me, the next day they would come by.
Again....a whole day at home, not able to work....he came by looked at the router and stated the problem must be and the Cybercity central....phew!
Called Cybercity again...they had a guy go out to the central and the hardware - no problem. I then spent 1 hour with the Cybercity tech trying to narrow down the problem since TDC was of no help. Connecting the router in various way and with filters etc we came to the conclusion that the box the TDC guys set up was faulty.
Then I was fed up. Cybercity agreed that this was too stupid and told me that eventhough they had to PAY TDC to come out during an evening (so I could get some work done during the day), they would not bill me
Next night the TDC guy came by. Openend the box and stated "Those wires are connected wrong"

THERE ARE ONLY 3 WIRES!!!