I also had a similar issue with comet, i cant beleive that its possible i can go to a shop buy something and then return it after 2 days and not get your money back. Please be aware, if you return a TV or anything, you will be a creditor...
"Your rights. Buy faulty goods, and by law, your rights are with the shop you bought them from, not the manufacturer. It's the retailer which should provide the 'remedy', whether that be a refund, repair or replacement.
However, accountancy firm KPMG says that while a firm is in administration, if the item you purchased is faulty, your claim for a refund would just be another claim as a creditor to the store – you'd be one of a long list of people owed cash by the company"
What I did and my Advice, call the credit card company as they sorted it out for me. I'm now a happy chappy.