ok had a look, this problem is down to something called your channel signal to noise ratio, it is extremely low this is an area issue on your cable and is not something that is specific to you, the rep that you spoke to earlier today has forwarded these details on to faults so that they can investigate where the noise is coming into the cable to cause this SNR to be so low. that is all the information that there is at this time, and im sorry you will just have to bear with it while it is investigated
this could cause a slow connection because of packet loss
OR no connectivity at sometimes at all