There are many transactions in the world where people pay for things they didn't specifically want, e.g. buying a car and getting all the seats and safety features, or ordering a meal and paying the full price even if you ask for some ingredient to be omitted.

In none of these cases--paying for a car where you'll take out the seats, paying for a meal where you don't get the mushrooms, paying taxes for government services you don't agree with--is the payment suddenly "theft".