Received a call on my cell phone but did not answer it.

they have called twice wanting to know what kind of trucks our company has.Just tell them ones with wheels, they'll hang up

Called, I did not answer, they hung up after 3 rings, as most telemarketers do, Illinois area code. Many states away so suspected telemarketer. I'm on the national, do not call list but evidently this does not stop them. :-(

I do know after getting on the National Do Not Call List, it slowed the calls down allot. I report each call when they try to sale me something. Each of us reporting helps them stop them. So go here register and never ever call a number back that you do not know, and leaves no message. https://www.consumer.ftc.gov/articles/0108-national-do-not-call-registry