The one company I hate most to do business with is Best Buy. Edit: Fry's is a close second, for different reasons.

Two different reasons. edit: well three.

One, they load all sorts of tasks on the cashiers, other than the simple one of taking your money and giving a reciept. It takes forever to get out of the store.

Two, If you are paying by plastic, they insist you put your signature into a digital pad. This I refuse to do. Most stores will produce a printed reciept to sign if you request it. Best Buy won't.

Three, even If you pay CASH, the cashier typically insists on you telling them some bit of personal info. Phone No, Zip Code, or even your full address.

There have been several times when I have simply walked away from the casher out of frustration at their inability to cope with a cash buyer.