Hi there,
Your current ticket was answered within 14 minutes. I appreciate the the second reply has yet to arrive, however this was after 11pm, so we have minimal staff in overnight, although you're always welcome to give us a ring so we can do some checks with you over the phone. I'm sorry that you feel that the replies to your other ticket were taking a long time to come back to you.
I've run a check on your telephone line and I can't see anything that is obviously wrong. Your connection/synchronisation speeds are very good (because you're so close to the exchange) and there no errors being reported via the test I've run.
Can I ask you to possibly try running a BT Speedtest via
http://www.speedtester.bt.com which will allow BT to see the poor speeds that you are receiving so that we're able to raise a fault with them after getting you to do a couple other things.
The problem is extremely unlikely to be at our end, but from anywhere from your router to the BT exchange itself (which is normal for most faults). Can you try running that test, trying to borrow your brothers router if at all possible and to ensure that your router is connecting directly to your master socket via a microfilter. If you could possibly connect to the test socket behind the master faceplate, that would be ideal as you get the best possible signal to your house from there.
Let me know how you get on and I'll do whatever I can to help.