I suggest you re contact BT, It looks like there has a been a mix up at BT with the addresses this can happen I am afraid in multi tenancy Homes.
Explain that you have been disconnected in error, if you get nowhere with the advisor taking the call, ask to speak to a supervisor and explain this fully.
First of all, you just can't go running off to trading standard so quickly as the poster above described.The operator has to try and resolve the issue over a reasonable period of time, plus this would only really delay the situation.
My advice would be to contact the call centre, explain what has happened and ask them to phone BT Openreach, the company in charge of setting up the line. They can then check the engineer's notes and it will be confirmed what has happened, they may have to stop the line again as to get your number back. Also speaking to a supervisor doesn't really actually help, unless u have a really incompentant operator, as it is the operator you speak to that has the system in front of them. Once it has been resolved you can then speak to them about compensation as you can't get compensated until it has been resolved, because they can then work out how much to refund you
I used to work for a phone operator so I know the systems and have resolved issues like this before