Have assignment, wholesaler lying help?

[Jackson Long]

I am reposting this here after no action in the general forum:

Wholesaler went into a deal with seller- contract specifies it is assignable.

I went into contract with the wholesaler.

Wholesaler contacts me and says the deal is dead that the seller backed out.

He is a bit shady and I smelled a fish so I contacted selling agent- agent says they close in a few days and that its the same person who was in contract from the start.

What do I do?