With that said, prior to spending the money on an attorney, I would get a hold of the agents broker and explain your situation. Tell them that if you do not get your money back, you will file a claim with the Dept of Real Estate.
Also tell them you will go to the local TV station, we have a channel 7 on your side here in S. F. that will help consumers. I don't think they need this kind of advertisement.
Without seeing your contract, it doesn't sound like you had a legal binding contract and if you did, you probably had a loan contingency or inspection contingency to allow you to do your due diligence.
Let us know how it goes. Good luck,
We cannot give you legal advice. You should seek counsel from an attorney in Tulsa. Everything depends on the contract. Shame on the other realtor for keeping yours out. I hope you have success.
This is also an excellent example of why using the listing agent to represent you as a buyer is generally not a good idea, especially when it's a "closed sale." These kinds of stories are very disappointing to hear. I hope you get your money back.