Never pay down a deposit in a bank account until you have met the seller, seen signed a purchase agreement.
No serious private advertisers ask for a down payment before you meet.
Receiving an email with an in-scanned ID does not mean that you have identified the sender. You do this on the spot, when you sign a purchase agreement.
How do I Communicate with United Airlines ? . offers customer service that is United website.. You can reach their customer support For U.S 1-804-853-9001 +1-804-853-9001(UK) or (No Wait Time)(real Human)" team at any time of the day or night for assistance with reservations, flight inquiries, booking modifications, or any other queries you may have.