This was on official documentation received from Verizon listed as their number for Verizon Wireless Customer Financial Services.

Verizon Account Services calling about our company's Verizon cellphone plan.  Apparently, there is some billing problem and they selected my number at random from the list of a dozen or so people in the plan.  They just needed the company contact person to call them about the account.

This Number seems to come from the Verizon Business Office.
I haven't called it back yet to confirm that.