Crocs appalling service

I received a promotional email for a pair of crocs. I emailed them a query, received no reply. Decided to buy but changed my mind & emailed them in less than 24 hours informing them of my decision. No reply. I phoned and was told that as it was on promotion they would deliver and only then would I be given a voucher for the price of the shoes. Te couldn't refund me as it was on promotion. I have subsequently learnt that according to the consumer protection act I am entitled to a full refund. I have emailed them a number of times but received no reply. I have tried phoning them (only a cell no) and having held on for 10 min listening to a recorded message endlessly repeated, I gave up. I now have a pair of shoes I don't want/can't get a credit for. No one answers the phone nor do they respond to emails! NEVER AGAIN