Brother sold house by investor without deed

[Lawton Michaels]

I have a brother who recently purchased a reo by a investment group that buys pooled reos from banks. he bought the house on a land contract wherein after 6 months of on time payments, the deed would be placed in his name. He needed to provide proof of ownership to get some utilities turned on and found out the investors DONT HAVE A DEED. What would be his recourse in a situation like this?