Lease Agreement!?

My husband and I signed on a lease agreement for one year to our landlord. He decides he wants to sell his properties and it gets bought out by a real estate agency. Our new lease was sent to us and we have to pay another deposit and another application fee. We already did that the first time around. Is our old lease terminated? or do we still have rights from our first agreement. My name wasn't even on the new lease and I signed on the old one. We are frustrated. My husband called about an appliance that went out and some of the new owners were less than cooperative. "you are on a month to month lease now, just so you know!"...real rude. My husband and I are apprehensive about the new ownership. What are our legal grounds with this situation?? We do still have a copy of the old lease. It expires june 2008.