They do not respond to phone calls or e-mails, take your money and sometimes don't deliver.
Why should you lose €100? There is no need for that, you can claim back the money through your bank using cashback or section 57. Also, report to local trading standards office.
We don't have to put up with this sort of thing, there are rules and regulations to be followed. If they don't deliver, get your money back.
Meanwhile, they're still out there taking peoples money and sometimes not delivering because some people don't take the appropriate action following breach of contract.