I was told there would be no math

The phone rings.

"Thank you for calling Pizza Place, can I help you?"
"Yes, I have a coupon for a specialty pizza for $12.99."
"Okay, what would you like?"
"I want to get a pepperoni pizza."
"Um...okay. Your coupon is for a specialty pizza, though."
"Yeah, but all I want is pepperoni."
"Okay. Well, it's cheaper without the coupon."
"No, no, I want to use the coupon."
"...?"
"So just give me pepperoni."
"Um...okay. We have a specialty pizza that's nothing but pepperoni; it's just covered with the stuff. 100 slices of pepperoni."*
"No, that's too much. Just regular pepperoni."
"...All right. That'll be fourteen dollars."
"Thanks."
"....?!"

*Yes, 100 slices. Yes, they count them. Yes, the cooks hate making them.