music producer claiming all royalties — what are my options?

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

I've been trying to resolve this on my own but I'm stuck.

music producer claiming all royalties. I've been dealing with this for about 7 months now and the situation isn't improving.

The contract was signed 10 months ago. I have a copy of the original agreement. The total amount in dispute is approximately $140,000.

Am I overthinking this or is this a real legal issue worth pursuing?

Illustrative response

I went through almost the exact same thing.

What trips people up most is escalating to a supervisor/manager. I'd recommend following the formal complaint procedure instead.