buying something from a private seller but he never gave me the product now he owes me money is that a suit  on a note or a suit on account?

Anonymous2020-10-13T17:07:22Z

Plain Larceny.
If an Electronic Communication was used, it could be Wire Fraud, investigated by both the FBI, and USPS  inspectors.

FBI, FTC, and Postal Inspectors investigate Wire Fraud, and Identity Theft.When to contact:https://www.fbi.gov/contact-ushttps://postalinspectors.uspis.gov/https://www.ftc.gov/news-events/press-releases/2019/06/ftc-law-enforcement-partners-announce-robocall-enforcement-sweepThey could be evading income taxes too:How Do You Report Suspected Tax Fraud Activity?https://www.irs.gov/individuals/how-do-you-report-suspected-tax-fraud-activity

JZD2020-10-13T16:01:46Z

it's straightforward breach of contract : money had and received. Don't overthink it.  the Judge won't.