Gearbest multiple credit card debits, non-delivery of order, inoperative web site for inquiries Internet

I ordered a quadcopter for my grandchildren. My credit card (through Paypal) was debited twice for the same item. The item has not arrived. Attempts to contact the company through their on-line site is impossible. They tell me that my order number is "not valid" or that the human test at the end is incorrect. There is no way I can contact them about my order. Since this has happened I found on the web "Problems with Gearbest" and found pages and pages of people who have been fleeced by this company just like I was. Somebody needs to put these people out of business so others aren't suckered in.