Has anyone dealt with open source code in commercial product?

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Illustrative scenario prepared by my practice.
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Hypothetical question

Not gonna lie, i've been trying to resolve this on my own but I'm stuck.

open source code in commercial product. I've been dealing with this for about 8 months now and the situation isn't improving.

This involves software/code I developed over the past 29 months. I do have documentation proving my ownership and timeline....

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

Illustrative response

Idk but have you tried reaching out to your state's consumer protection office? They sometimes have free resources or mediation services smh.