square terminated my account — update in comments

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

Has anyone dealt with something like this? I'm not sure what my options are.

Square terminated my account. I've been dealing with this for about 14 weeks now and the situation isn't improving.

The amount being held/disputed is approximately $10,636. I have tried contacting their legal department 5 times with no resolution.

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

Illustrative response

Crossposting my experience here because I think it's relevant: I successfully disputed a charge through my credit card issuer under the Fair Credit Billing Act. The key was filing within 60 days of the statement date and putting the dispute in writing. The credit card company investigated and issued a permanent credit.