Thanks for your answers.... it is probably a line problem but colba told me they couldn't ask Bell to change the line or give me back the old one that is still LIVE as there is still a dial tone on it. Being switch to a Bell DSLAM could get me a nicer profile but Colba only offer 5mb/s profiles so forget the IPTV.
Is the line bad enough I can argue it is unfit for internet usage? From what I read, an attenuation of 400 is way out of range.
Is it really impossible for Bell to give me back the old line?
I'm left with cancelling everything and try to get a refund for the IPTV stuff. And then go for Bell's FIBE!