I stand by if you got handed the order you placed, and you think it's wrong. Drink the fucking drink. Barring a health issue or an allergy it's not going to hurt you.
If you are handed something you think is wrong, but it has your order number/name on it, I think it's ok to ask "hey is this the X" and they can say, "yes this is how we make X" or "oh it looks like the wrong thing was made/looks like this was someone else's order". You shouldn't just shut up if you think it's wrong even if it is handed to you.