Okay so looks like 20CN to 21CN
On 21CN which tries to use ADSL2+ if you had a variable line connection before, then it will be worse.
Restart the modem once, and get the same stats as soon as you can. Modems tend to settle on the lowest speed, and only recover if YOU restart them.
Do you have a master socket, that comes apart like in the picture http://www.thinkbroadband.com/images/faq/faceplates/...
If yes, try the modem in the test socket, and post the stats. The IP Profile may take a short while to improve, so just the stats are the important part.
If that socket is better then read http://www.thinkbroadband.com/faq/sections/radsl.htm...
In terms of escalating, if the problem is your wiring then yes Openreach will charge to fix it. If the noise is not present when using the test socket, then suggestion is that it is your wiring.
if the noise is present at the test socket, and all other phone sockets DONT work and you DO NOT have any filters or ADSL modem plugged in, then report a noisy line to your voice line rental provider, and DO NOT mention broadband, and when engineer arrives unplug all the broadband kit to show the noise is still present.