"Well-well look. I already told you: I deal with the god damn customers so the engineers don't have to. I have people skills; I am good at dealing with people. Can't you understand that? What the hell is wrong with you people?"
At least it's not Google Hangouts. That crap platform will kill any laptop battery in ~30-45 min flat and make it seem like you're rendering some 8K video.
My guess...they use quickbooks in the background, which allows you to upload receipts. If the description of your amazon receipt looks like furniture, then they'll mark it as such...if it looks like office supplies...office supplies.
I use Wave, which lets you upload receipts and it will perform OCR to extract vendor info, date, total cost. It's not much of a leap to go 1 step further and look at the line items and categorize...again just a guess.
In the early 2000's there was the "original AT&T", a separate wireless company called AT&T Wireless, then Cingular who was the wireless group/division of SBC (Southwestern Bell) and SBC themselves.
Consolidation started with Cingular buying AT&T Wireless. Then SBC bought AT&T and simply kept the AT&T brand. Eventually the Cingular brand went away and they went back to AT&T and AT&T Wireless.
Wheeeee! The AT&T of today is basically SBC with all the old assets rolled in. SBC bought AT&T, not the other way around.