Legal Issue with previous landlords- Do I have a case?

Moved in Feb. 2008, landlord sold property to new landlord on March 5, 2008. During the time of March to May we were told all rent payments were to continue going to the previous landlords. After May, the new landlords contacted us looking for their rent payments from the previous months. We told them the situation and it didn'tt seem to matter. At that time they put us in arrears and we were unable to provide them with reciepts due to the fact that we never recieved any. Then during the entire time of all this, our stove was leaking gas. We advised the old and new landlords of this issue and either failed to fix the stove leaking gas. We contacted the City at which time they inspected the unit and fined the new landlords due to problems that were not under code with the City. After this happened the new landlords continued to retaliate against us. They called Child Protection stating that we did not care for our kids because of the leaking stove, they came over and cussed at us repeatedly in front of our kids, they tresped into our home twice and invaded our privacy by taking pictures of our home including our bedrooms when we were unaware of them being there. They then filed an expedited eviction case on us stating we owed the past due rent (which they did not have a rental license until May 5th, 2008) They also stated that we were doing illegal drugs on the property and they filed a police report. This information was false as they never had proof and a police report was never even filed. They threw our 5 week old kittens in the garbage (have witnesses of this.) The stove that was supposed to be fixed was to be fixed by a licensed plumber, which they failed to do. They had a friend of theirs do it for them and then when the stove was STILL leaking gas and the firemen came to es it, they lied and told them that we were the ones who installed the stove. Due to all of this, my family was kicked out of our home within a 24 hour period due to the expedited case. My children went through severe traumatic drama due to this as they are only 1yrs old and 2 yrs old. Do we have a case? Invasion of Privacy? Tressping? Animal Cruelty? Filing a false police report? Filing eviction with false information for an expedited case? Anything??? If I do have a case, what kind of damages can I seek and for how much? I severely need some advice.