how to track down Wells Fargo foreclosure

A client put an offer on a house, but the amount owed was higher than what the seller could receive. Their lawyer apparently told them to let the bank have the house, so now it’s not available. The agent isn’t returning calls and home owner isn’t responding.

Wells Fargo apparently has the loan. Does anyone know who to contact in Loss Mitigation or if that’s the best route? We’d like to buy the loan from them, so seems like we can save them some time.