Claimed to be AlphaTech.

But they are just another toner phoner scam.

Listed here as "The Supply Swindle"
https://www.ftc.gov/tips-advice/business-center/guidance/small-business-scams

We got a call from them (don't remember the company they stated they were) asking to verify the number on our copy machine - stating they were just sending an updated catalogue for supplies.  I imagine next they would probably start sending us supplies for our machine assuming that we wouldn't notice they were billing us for supplies that we had supposedly ordered.  We have a contract with other companies for our supplies, and the phone number for their call was listed from Lancaster, CA.

You are 100% Right! -  Good for You!

they called asking for our printer model. I started questioning the caller asking why they needed the model number, but he refused to answer my question and then said I was stupid and hang up.
i feel sorry for these type of people who need to make up lies in order to get information! loser