Satisfaction Services Inc – They did not pay me

I signed up to participate in a mystery shop back in August of 2022 for a restaurant in my area. I did the shop and wrote my 500 word essay. In which they want you to remember every single detail from the time you walk in to the time you leave. They kept saying we will pay you and never did. They keep ignoring my emails. I finally received a bogus email a few months ago from them stating we will pay you and they still haven't.