How did you pay for this? If you paid by Paypal open a dispute with the reason that the goods supplied are substantially different to what was described in the auction. Paypal will favour the buyer in 99% of cases and will refund your money by debiting the sellers Paypal/bank account

If you paid by any other method then do the same but through Ebay, but Ebay even if they find in your favour, rarely get your money back. They seem to think it is enough to ban the seller of just warn them as to future behaviour.