AITA for contacting the booking site after my uncle claimed my rental was family property?

One hour before the paying guests were supposed to check in, my uncle showed up with 5 cars, coolers, kids, and a dog and demanded the keys to my grandparents’ house because it was "family property." I turned on the driveway camera, called the booking platform, and asked one question: "Who took your money?" By sunset, the loudest person there was begging me not to involve the police. ---------------🐼Panda Tales🐼--------------- #reddit #stories #redditstories