If you're still having problems, fill out our webform (you can find the link under "about me" in my profile) and I'll have a look into this for you.
My speed has dropped after a power cut last week and a drop out (very unusual) on Monday. No sign of the speed recovering . . . Used to be 30/8.
As per many other posts, the BT speedtester is borked (again), so no longer able to check. Had a couple of further disconnections. Openreach modem is no hotter than normal, don't think the problem is here.
Speedtester working again.
More weirdness. Profile has dropped further, but download speed is slightly higher!