4-28-19 11:52am EST NYC
Thanks Paul for your important reply!

BEST BUY is a retail Electronics Chain located throughout the USA. The walk-in Best Buy I used was in NYC (to buy MS Office 365 Personal).

The tech support person sent me an email for their Invoice via PayPay, the name was GREAT WEB SOLUTIONS updated invoice $99.99 USD due 20 May 2019.
In out conversation he said he was from Deli India... the above website shows they are from Deli India. He also added a new gmail account with my name and also accessed by him (for any future Internet monitoring for malware etc, $99 yr/lifetime).

I just phoned PayPay and confirmed my older account and using a credit card. Then I updated my email address and a new password. They said that the GREAT WEB SOLUTIONS Invoice was cancelled ($99). Further I will cancel my new gmail address in the near future (created by the tech person).

Next week I will go back to my Hard Drive which now has MS365 Personal installed. And will have to see how to get the older version of MS OFFICE 2010 uninstalled and no more pop up asking for a Product Key. I guess I will call MS Office again "setup"??? for this? Or maybe within the forum I can learn how to do this.

In the interim thank you very much for your help... and also hope not to get a phone call or email from the tech person I first talked to.

A Late Happy Holiday to you and weekend,

Sy S.
from NYC