I'm definitely tempted to just return them this just isn't acceptable from a company to sell a product that doesnt work and then offer zero support. Possibly the worst experience I've ever had from a component manufacturer, at least other companies respond to your emails.
I'm already outside of the 28 day return period however so I'll give them another week to contact me on the offchance theyve all just gone on summer holiday and didnt bother to coordinate so as to not overlap...