Folks, I'd appreciate advice from any BT engineers in particular on steps and cost to fix my domestic phone wiring as it is currenly preventing me from getting full steady upload and download speeds 
I use the ISP "Be" which requires a BT phone line to get fast ADSL2+ speeds. Through a process of elimination the Be tech support found out that that it seems there is something connected to my phone line even when nothing is there! Our guess is that there is some fault with the domestic wiring. (There is some noise on my phone line but there are no reported faults). Our wiring is pretty unusual - it enters the house and 4 exposed wires go into a BT joining box (including the orange ring wire). These wires are pretty tight and then travel to the lju2 master socket. Note the orange ring wire is not connected here and there is no test socket.
I am super close to gants hill telephone exchange (like 600m), so we should be getting super fast speeds (lines are correctly filtered etc).
Knowing that 21 CN is around the corner for our exchange. Will BT fix my domestic wiring? Can they work out if wiring is faulty from the house to the telegraph pole? Also if I want to maximize speeds, in future for 21 CN what cabling should I ask BT to update to, so that I am suitable future proofed?
Thanks!

I use the ISP "Be" which requires a BT phone line to get fast ADSL2+ speeds. Through a process of elimination the Be tech support found out that that it seems there is something connected to my phone line even when nothing is there! Our guess is that there is some fault with the domestic wiring. (There is some noise on my phone line but there are no reported faults). Our wiring is pretty unusual - it enters the house and 4 exposed wires go into a BT joining box (including the orange ring wire). These wires are pretty tight and then travel to the lju2 master socket. Note the orange ring wire is not connected here and there is no test socket.
I am super close to gants hill telephone exchange (like 600m), so we should be getting super fast speeds (lines are correctly filtered etc).
Knowing that 21 CN is around the corner for our exchange. Will BT fix my domestic wiring? Can they work out if wiring is faulty from the house to the telegraph pole? Also if I want to maximize speeds, in future for 21 CN what cabling should I ask BT to update to, so that I am suitable future proofed?
Thanks!
(no guarantees though!)