What's the deal with payment processor classified me high-risk?

Sorry for the wall of text. Looking for advice on a legal issue. Here's what happened.

payment processor classified me high-risk. I've been dealing with this for about 15 weeks now and the situation isn't improving.

The amount being held/disputed is approximately $19,072. I have tried contacting their legal department 5 times with no resolution.

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

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 tbh.

Went through something like this -- ended up getting a lawyer involved which made all the difference.