Consumer Direct are effectively Trading Standards.
Visit www.consumerdirect.gov.uk and call the Helpline for further advice.
Send any correspondence necessary using recorded delivery - keep the receipt in a safe place.
As any address given may simply be the registered or accomodation address for the company, it's likely that you'll be throwing good money after bad if you spend on petrol/fares to pay them a visit.
In future always do your homework and check reviews before you make any 'considered' purchases on the net or elsewhere - and ask here before making payment.