Did I got Cheated?

I applied for a job as an SEO specialist in a San Francisco based SEO company.

Got my round 1 cleared and then they give me the assignment to create an Audit for 1 URL and GMB optimization suggestion for their company listing.

I created a custom report for them and it took me 10-15 hours as I also design it as per the theme of the client/company.

However, it's been a week I did not any response from them or any feedback on the assignment.

I took 1-2 follow-ups but did not get a single reply. At least they could've said that you are not qualified.

It feels like I am being cheated so that they can get an audit report and GMB suggestions for free.

What should I do now?

P.S I cannot disclose the name of the company