Admittedly I received the glasses within a few days but that's purely because they have an external company fulfilling orders. Once these crooks have your money and you consider a refund do not expect your money back.
A. Their email addresses are one way. They send promotional garbage to you e.g. free returns if bought through Klarna (which is a lie) but if you respond or try to email them your email will bounce back.
B. They have no telephone number
C. They delete any comments from Facebook and Instagram when requesting a response.
D. Their company accounts do not look like a company that will be continuing for much time longer so I would be wary ordering anything from these guys.