You’ll want to contact official support. You can file a ticket here (huge backlog, so takes ages), or call them (scroll all the way down for number/times, juts above the grey bar at the bottom of the page). Sending the phone to a random address will just delay matters as it won’t be processed correctly. If you received the phone less than two weeks ago, you can arrange to return it for a full refund if you prefer that to a repair (no reason needs be given, but the phone should be good-as-new). If you’ve had it longer, you can arrange for a repair under warranty.
As mentioned in some of the posts above, in some cases it’s a case of problems with the connector that can be solved by taking the screen off and putting it back on again. Worth trying especially if you’re in a rush.