The bank forclosed on my landlord and want to get us out. our landlord still has our deposit. what happens?

the bank wants to make some kind of deal with us to get out soon. i'm perfectly fine with that but i don't know what kind of deal to expect. there are seven months left on the lease at $3000 per month. the bank took our lease to determine it's legality (or something) and said they would get back to us. how much can i reasonably expect to see from this? we do not know the exact date the landlord got forclosed on. is he required by any law to inform us? also, he still has our deposit and possibly some rent money he collected from us after the house became the banks property. are we entitled to our deposit? how can we get it back if he never returns our calls? another issue, we haven't had heat in months and even after numerous calls, he never fixed it. is there anything that can be done about that?