What are my rights as a tenant?? Please help..!?

I moved into a townhome at the beginning of August and before I even started unpacking my belongings I noticed a bed bug crawling around in my bathroom. The next day I immediately went to the leasing office and told them about it. They told me they never had any complaints of bedbugs before in that particular townhome so I suggested that it could have come from my neighbors since their bedroom is right next to my bathroom. I told them I have never had bed bugs before and I hadn't even started unpacking my things so it wasn't from me! They told me they would have the exterminator come out that Wednesday to spray. A couple weeks went on and I noticed ANOTHER bedbug in my bathroom! I went back to the office and told them about it and told them that it HAD to be coming from the neighbors. I asked her if they could please check their home out to see if that was infact where they were coming from so they could spray! She said they are not legally allowed to do that and the only way they can spray for bugs in their home is if they come and report it to the office! I told her that this would be the last time I was going to deal with it seeing as how I was 9 months pregnant at the time. I had to bag all of our belongings up literally right after I had JUST unpacked everything! A month went on and I didn't see anything so I umed that everything was ok...right? WRONG! Lastnight I was sitting on my bed and saw a bedbug on the wall that's right up against the neighbor's second bedroom!!! I immediately started bagging everything up and checked my mattress/boxspring and didn't see anything there. The next morning (today) I went to the bathroom and what do ya know! Another bedbug crawling on the bathroom floor. So today I went to the leasing office yet again to complain about the bedbugs and she said the neighbors finally reported to the office that they had a severe case of bedbugs and that they had already been sprayed twice! I told the lady that I wanted to transfer to a new townhome and she said I would have to talk to the manager about it and to come back in an hour. I went back and waited 30 minutes only to find out that the manager was too 'busy' and that she wasn't talking to any of the residences until next week! REALLY??? I have a two year old and a 7 week old and I DO NOT want bedbugs getting into any of their belongings. I have vaced,bagged everything up,scrubbed the bathroom floors,walls,sink,tub EVERYTHING! I am doing everything possible until the exterminator can come out Wednesday. It has been a nightmare living at this place! Not only am I having an issue with the bedbugs from my neighbors i'm also having issues with them partying all hours of the night,playin loud music,busting their window,and trashing their place/porch! I've complained 5 times and called the police twice but NOTHING is being done. The lady at the office said it's a personal issue between the two of us and that we would have to solve it on our own? Really? What are my rights? Can I legally break the lease seeing as how the manager won't talk to me and keeps avoiding me? PLEASE help!