I received the same call, and figured it was a scam. So I looked them up and found their website: qbservicesllp.com. 

It looks like they are a 3rd party licenser out of India, and they seem to sell Quickbooks subscription plans? Not sure just thought I'd send it into this thread for the QuickBooks fraud team to review, and so if anyone else gets the call they know it's seedy.

Hope it helps!