Told I owe money back on my benefits (Salt Lake City)

The agency says I reported earnings incorrectly, but I think I followed the instructions. I would rather hear the honest version than the polite one. I did not notice any errors at the time. Who should I talk to first?

If you are unsure, free legal aid in your area may help for this kind of notice.

Thanks for writing this out. I went through something close to it 3 months ago, and it got easier once I kept a simple log of every call and form.