Crypto Exchange Dispute — ACH payment reversed after goods shipped

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

ACH payment reversed after goods shipped. I've been dealing with this for about 7 months now and the situation isn't improving.

The amount being held/disputed is approximately $35,041. I have tried contacting their legal department 7 times with no resolution.

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

I went through almost the exact same thing.

In my case, it took about 3-6 months to resolve. The key was having everything documented.