It sounds as if there may be some confusion on the address. Regardless, foreclosure is foreclosure.
The only advice I can give is to stay in touch with your lender and keep them in the loop and try to work something out. The last thing a lender wants to do is foreclose.
There is a great book that I just ordered off Amazon. Use Foreclosure Law Keep your Home. I think it is very informative and for $10.00 you can decide if you want to fight the foreclosure or leave on your terms. Good luck!