I ordered a hand tossed supreme pizza today. They skimped on the pepperoni and they must use a poor quality cheese. Not happy! Thankful i ordered a medium, as we were not able to finish.

Honestly id ask for extra pepperoni and see what they do then. If they don't give you enough then just be polite and sincere and talk about it to them, the only thing being rude would do is make them not want to help you (not saying you're rude or were rude, just giving advice). Also double check that you're speaking with the manager, sometimes employees pretend to be the manager, it happens apparently. If they don't fix anything or are unwilling to help just don't give them your business

You should Andreas the Store manager