If they are your rugs, you have to care for them. Maybe your grandmother did not know that your father gave them to you; I would have said, "Those were my father's rugs and he gave them to me; I'm going to roll them up and store them in my room" (or up in the attic, down in the basement, garage?) Why did you not call your aunt (why is she not caring for her own rug and helping you with yours?) I would have agreed to get them out of your grandmother's way and asked where I could store them. But if you have no space of your own, then all bets are off. Your grandmother can arrange her house however she likes; not nice of her to not help you but that's the way things are.

What became of the rugs? I can't imagine wanting something as a 20 year old and throwing it out anyway. You have to stand up for yourself, no one else can do that as well as you can.