missing 1099 from defunct exchange — 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

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

missing 1099 from defunct exchange. I've been dealing with this for about 7 months now and the situation isn't improving.

I have already tried to resolve this directly but got conflicting advice.

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

Illustrative response

Dealt with this exact thing last year.

What trips people up most is escalating to a supervisor/manager. I'd recommend following the formal complaint procedure instead.