Buyer ghosted, recourse for breach of contract?

[Vishakha Penney]

Curious what you would do in this situation: North Carolina property. Buyer made offer with 5k earnest money in contract but never paid it. Wanted to see property again, and ghosted multiple times after being told he would have to pay EMD first. Double agency. Agent not helpful. Do I have any recourse? Fools errand to sue for breach of contract? I'm not at all happy with the agent...do I have cause to fire her in this case? Under realtor contract for another 4 months. Thanks for your input!