I always get in a mess once two Anonymous posters start talking in the same thread, but I think it is you that posted this:-
Also. I don't quite understand what you mean by unbundled..etc. but, http://www.samknows.com/broadband/exchange/LCDTF
If it is, then you are not on ADSL2+ as only BT Wholesale and talkTalk are in your exchange, so you are on O2 Access, which is BT Wholesale.
If you signed up before 18 December you can get out for £48.93. I don't expect that suits!
The more hopeful thing is that O2 have this problem nationally and have said that upgrades to correct it are due in mid-April. It takes 3 months from them ordering extra kit from BT for it to be delivered, and you joined just before the need was starting to show up.