Mouth Foods interview questions

Pretty informal interview. The office is difficult to find, and there was no one there to welcome me, so it was slightly uncomfortable. They ended up asking me to start freelance. I completed 3 assignments for them. After delivering the assets, they responded telling me they would get back to me soon with edits. They never did. They would not respond after multiple follow-ups to multiple employees. I was never paid for my work. Completely unprofessional.