Soully Zoom

I usually have good experiences here, but I don't think I will rent books here again, if I can help it. The person checking my rented book in tried to hassle me about a spot on the bottom of the book. None of the pages inside were harmed at all. They looked at it asked if I spilled something on it. I didn't spill anything on it. Then they accused me of lying because "it's new so it wouldn't have had this on it when you bought it." They are generally friendly, but I don't want to be accused of lying when I am returning a book in good condition. There was no water damage just the spot.