Dealing with foreclosed homes in the park

Any tips on dealing with foreclosure companies who have homes in my park and not paying rent? One is a Greentree. They say they will call when it is ready to come up for bid but right now it is tied up in bankruptcy proceedings. The other I don’t know the mortgage company. It may be some subsidiary of Bank of America. Nice lady has moved out and told us she won’t pay rent. By law it is abandoned. There is a realtor involved but he says he can not give out the lender’s address. I don’t want it to sit there indefinitely without having some acknowledgment the home can not be moved without paying back rent and it will be paid or without any contact with the mortgage holder. I made a wholesale offer on the home but the realtor wants retail.