I get wrong orders all the time and as you guys can well guess Im on the phone right away. The key is to accept it from the driver..then call after he has left. That way you end up with double the order and the driver gets a few extra bucks on the second delivery since its not his fault the cook or order taker fucked up.
I wont ever pay for shit I didnt ask for.
After it happens a few times I switch pizza places since I'd rather get my order right the first time ....and not have spit on it like some ppl do when you complain.

I usually get hair in my food ( short curlies ewww). It has happened too many times and Ive got loads of nasty stories.