OK so I work at a tutoring center, and one of my student's parents own a chili restaurant. they are very nice but they keep making these sandwiches (4 huge pieces) and the student brings them in for myself and the owner. (they also give us stuff when we go to eat at the restaurant). these sandwiches aren't that bad, but not all that great (they are not something normally on the menu). But to be nice I take them, and usually make my fiance eat one .XD his mom doesn't like me putting it in the fridge because they take up space, and therefore the other three usually end up getting thrown away (which at the same time she gets upset with me for wasting food).
I've tried on several occasion to be like "you really shouldn't be doing this" or "we don't have the space", but they keep giving thinking I'm just being polite (and they are very pushy about giving it). I don't want to upset them either since I don't want them pulling their son out of the center.
So I'm trying to figure out a way to get it through their head without seeming to be rude.