I've been missing my drone for almost six months.  It's dissappeared since I mailed it to DJI for minor repair.
I've had chats with so-called online tech support kids, provided my SN, case number, dates, etc...
Yet once I send my check to the address they provide - which is Cerritos California, it is all 'crickets'!  Nothing!
I find it interesting that the web site has no navigation or links to any type of "escalation" procedure.
I wonder if DJI is legit?  Any comments, please do so.

Hi there, we are so sorry for what happened, you can always contact our support team www.dji.com/support to escalate the case if there is any problem. I failed to get the case number via your Forum account, could you please post the case number here so that we can check what is going on and do our best to help? Thank you.