Woody, I know what my sales tax rate is. The problem stems from my living outside city limits, but the mail goes through the town post office.
AT&T charged tax as if I lived in the city limits. The only thing I have in common with that city, is that my mail is routed through it.
Any commonly available software will tell these huge companies the proper tax rate. They are using the incorrect rate as a revenue enhancement device.
I know you know. It's Amazon that needs to look up the rates.
Woody