I'm still waiting for my delivery which, although it doesn't exist according to the tracking number, had got as far as Madrid on 25th Feb..
I've just emailed them and apparently, "someone will reach out to me within 24 hours". It better not be while I'm in bed or they're gonna have some further explaining to do.

Anyway, their landline number is 020 3510 0666 if anyone wants to try it.