This very sad to hear. Have you ever tried to let them repair them? A refund is one thing, guarantee another. There a clear rules regarding such matters.
http://europa.eu/youreurope/citizens/sho...dex_en.htm
http://europa.eu/youreurope/citizens/sho...dex_en.htm
Innuos Zen Mini MK3 with LPSU -> (Ethernet / Audioquest Optical) -> 2x Phantom I Gold
Pro-Ject Carbon Debut Esprit Turntable with Ortofon Red -> (Cinch/RCA) Musical Fidelity Merlin -> (AudioQuest Optical) to Phantom
Master & Dynamics MH40, Audeze Sine, AudioQuest Dragonfly Red; Remote Control via macOS and iOS devices (Devialet App / Innuos Sense / Airplay)