Appalling service, BT you suck!

Question

So we have moved into a brand new house on a new development in "distant" Derbyshire. During the purchase process I was warned by the builders that BT were dragging their heels on expanding the number of lines available in the green box servicing our estate. They said I should contact BT asap which I duly did a whole three months in advance of our moving in date. When I spoke to BT's representative in the call centre in Bangalore (?) I was assured that there was no problem and that our phone and broadband would be active on the 30th of March - a few days after moving in - perfect! Just before moving I received a message from BT telling me that the phone line would be connected on the 30th and I'd receive a call on the 31st to tell me why/when the ADSL would be connected/setup. When the 30th passed and no engineer from OpenReach appeared I called BT again to be told that the builder had not installed the conduit under the ground to install the cable. I explained I knew that was incorrect as I could see said conduit outside my front door with some blue rope to pull the phone cable through with. The builders even offered to pull the cable through if BT provided it. The date then slipped to the 7th. When the 7th came and went with nothing from BT I rang them again and this time I was told that the green box at the end of the road needs to be expanded to provide me with a phone line. It seems I'm going round in circles, unable to speak to anyone at Openreach to extract any rational explanation or impart and sense of urgency. BT has sat on their big fat ass for three months and done nothing to fix a problem with their infrastructure, a problem which they initially assured me didn't exist!! How can you run a business this way? It's appalling, verging on incompetence. There are going to be at least ten other houses on this estate in the same situation. I work from home - I was prepared to be without service for a few days, but seriously - a whole month? Besides the fact that I now have no confidence in any dates you give me. I'm seriously considering legal action.

Answer 1

And so the saga continues...  
Today's update: (though BT were warned 3 months in advance by me and even more in advance by the builders who built our new house...) the advisor we spoke to today at BT "Customer Care" (aka BT we don't give a flying **Bleep**) informed us that "the contractors" (BT revel in blaming someone else, anyone else, preferably who we can't speak to) had made "a mistake" in their estimates and though the previous advisor had assured us repeatedly that we'd be connected today, we now have to wait until the 5th of May for the "line work to be completed" (work that could have been started and completed months ago) and we will receive a phone call on the 6th of May to tell us when we will actually have a working phone line.  So here I am sitting connected to the Internet through my Three Mobile (the one plan) contract phone tethering via a wireless repeater.  
I fancy seeing what odds Ladbrooks will give us on that 5th of May date.  Then I might win back the money I have spent so far for me to continue working from home (rather than face a 200 mile daily commute) on access points, wireless repeaters, phone contracts and now a voip adapter.
So thanks BT and may I just vent: you really are a bunch of **Edited** idiots!  Oh btw I've contacted BBC Watchdog as it seems they did a piece on another road off our estate last year where an on call surgeon had to wait from August until December to get connected by you - I think a follow-up is needed as you have not really shown much improvment.  Also I'm writing to OFCOM.