So, I got a factory refurb advanced, as a spare drone. I already have Pro, (Hoping the FAA will relax the commercial side of drones) so I let a co worker borrow it, and he took it out a few times, always in beginner mode. Well, it flew away and crashed. My coworker swears he was only going up and down and slow panning with it. I hot a hold of the flight data, and well, it does not look like a normal flight, we have upside down, we have a max altitude of 800+ feet, we have some fancy spinning and spinning we have multiple ignored "return to home" commands sent, Who should I contact first, DJI, or the retailer?