Square Marketplace Dispute — customer filed fraudulent chargeback

I'm dealing with a situation and need some guidance.

customer filed fraudulent chargeback. I've been dealing with this for about 12 months now and the situation isn't improving.

The amount being held/disputed is approximately $15,582. I have tried contacting customer support 2 times with no resolution.

What's the typical outcome in situations like this?

I work in this industry and unfortunately this is very common. The good news is that when people actually push back with legal representation, companies usually settle.