IT IS A FRAUD!!!
The exact same thing happened to me! Got loan approved, sent money, got contract, was asked or more money, no loan and out Christmas money, and will be out of a home with three children because they didn't come through. Great Christmas.
I could kick myself in the a... for even thinking this would work.
DON"T DO IT! It's too late for me and a few others but if you read this DON"T EVEN CALL THEM BACK!