New house problems, do we have a case?

Ok ,basically we sold our old home two years ago and had been renting since then. In September 2011 we visited a new homes site (well known builder) to look at buying a brand new house. The area we had chosen was great due to schools for our daughter and an expensive, desirable place to live. We moved in in December 2011. When we looked at the plans we saw that there were a number of social housing properties on the site. We asked about what happens if there are any problems and were told by the sales people that it is very strict and if there are problems it's a simple case of three strikes and they are out to protect the private owners. It seemed fair.

This bit is long winded. Since a family moved in during January in the social housing we have been plagued by a series of incidents on a daily basis some more serious than others. We have to keep a diary for the housing company, the police are involved, they are having home visits and have damaged our property on occasions. We are not a specific target I would like to point out. This has gone on and on and on. Today we had a meeting with the police and the housing company and community support officer. We are now aware that it is not a three strike policy and they are aware that the sales people have been telling several buyers the same thing. We were told that there had not been any incidents before we bought the house. This was also false, there were drug problems In a block of flats on the site being dealt with by the police. We were then told that this is the the only case the building company have had with social housing tenants. Again the police and housing association have confirmed that there are many on going problems all over our region on different sites.

We are now at the point of moving out as we have had enough and seek a good environment for our family. I used to work away during the week but have gave up the job to be at home as my family didn't feel safe. We paid a premium to live where we do.

we enquired about all these points before we purchased the house and were constantly re assured it is an easy process and we are actively protected by the housing company? We have been told this is completely false by the housing company and police and are willing to confirm that this has all been said. They also said that the family will most likely be given a second year in the house.

I have kept this a short as poss, I can assure you there is a lot more to it and all other avenues have been explored. The visits etc have had no effect at all and some of the things that have gone on are nothing short of disgusting. The police have been very helpful.

I would just like to know if there is a chance we can get compensation or legal action? otherwise we are stuck here. We would be happy to walk away and get our money back

(I would like to point out that I am not angry with people living in social housing etc, just this family and the rules we were told which are completely false)