Bang & OlufsenBeoplay H100 Premium Wireless Active Noise Cancelling Over-Ear Headphones with Protective Carrying Case, Sunset Apricot

I bought these very expensive headphones and on my very first use of them on a long 7 hour flight, 90 minutes after functioning properly, they just failed me. The right ear cup stopped noise cancelling, and stopped sound. I reset the device, noise cancelling came back but no sound, all while sound quality on the left side has deteriorated to cheap speaker level.I contacted support and they suggested a hard reset which I did, and they seemed to come back to life. A couple of days later when on another flight, the same crazy games happened. and it’s not just on flights that they go bad, it’s that they would work well for a few minutes and then die on me.the problem I just discovered is the dealership support is i depended, and global support has no authority over them. and that I need to take them to the dealer to repair them! what? brand new premium device that worked well for a couple of hours total, and now gets repaired? so I pay full price for a practically refurbished device?