Can someone explain contractor abandoned project halfway?

I publish illustrative scenarios prepared by my practice. All participants and conversations are fictional. The fictional posts are not posts by real users, accounts of client experiences, or reports of actual results.
Illustrative scenario prepared by my practice.
For informational purposes only. This is not legal advice. Laws vary by jurisdiction. Consult a qualified attorney for advice specific to your situation.
Hypothetical question

Looking for advice on a legal issue. Here's what happened.

contractor abandoned project halfway. I've been dealing with this for about 12 weeks now and the situation isn't improving.

The contract was signed 9 months ago. I am not sure I have the original signed copy. The total amount in dispute is approximately $114,000.

Do I have a strong case? What should my next steps be?

Illustrative response

NAL, but from what I've read, you should file a complaint. Take the above with a huge disclaimer that I'm just some person on the internet.