I agree that DVDi are just a bunch of muppets.
I emailed them SIX times over 1 week to cancel an order and then I get a order sent confirmation email from them - I have now sent further follow-up emails and received ZERO response.
I have received the item today from GIBRALTAR and it was only £5.74 but based on the above post, I doubt sending it back will do any good in getting a refund or even a reply.
Looking at the domain details of the website, it registered by a UK Individual, doesn't look like a professional outfit at all:
http://whois.domaintools.com/dvdi.co.uk
P.S - Heat added to the OP