Is the property door-to-door charge normal?

You were right not to give it. This situation is very suspicious. The property will only send a notice to the unit or household, and generally will not directly charge various fees. Moreover, health fees and other expenses are collected together with property management fees, and are rarely collected separately. You can check the key card, which usually has the phone number of the property. In this case, you can contact the property, so that you can distinguish the authenticity and prevent being cheated.