Square Marketplace Dispute - Square terminated my account

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Illustrative scenario prepared by my practice.
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Hypothetical question

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

Square terminated my account. I've been dealing with this for about 7 months now and the situation isn't improving.

The amount being held/disputed is approximately $9,578. I have tried contacting their legal department 3 times with no resolution.

Has anyone been through something similar? What worked for you?