Owner wanting out of our contract in escrow with my 1k down

[Anthony Nieves]

Hello folks thanks for this platform being available . I got my first property under contract, already getting approval from underwriting with a hard loan. I planned to keep it for a possible lease option future flip. The owner is now reneging and refuses to sell (I found out he got a better offer from a back stabber lender/realtor I went to for a conventional loan). I am about to go to the court house and file a memorandum for refusal to sell. Any good advice out there on how to move forward with inexpensive legal fees? Or any good lawyers out there willing to help the a "boo" letter?