Non existent customer service

I bought a vape device for my wife from Vape King for Christmas, and it started malfunctioning about 3 weeks after purchase. I tried to get in touch with the company, but to no avail (it's been over a month, I also sent a follow up email which wasn't rep**** to either). I have since attempted to comment on social media posts (No DMs because their DMs are closed on Twitter and Instagram) and haven't had a single reply. I haven't called as I know I would just lose my temper. Disgusting customer service.

The device is probably out of warranty now so even if they did reply they wouldn't help.