Ooooh!
Toner scammers!

"I'm calling from customer service on your copier. I don't need a meter reading, just the model #"

They are scammer.s They are not from whatever company supports your printers.

They'll just send you overpriced toner that you didn't order.

See - The Supply Swindle.
https://www.ftc.gov/tips-advice/business-center/guidance/small-business-scams