eBay

Can I cancel my vehicle that I'm selling,when a bid has been made with 5 days left on bidding?Is there cancel fees,ect

I ordered an item back in April and didn't arrive,so i contacted the seller so they said they would send me another one. and that didn't arrive, that was due 2 weeks ago.they have said that they have tried to refund me,but paypal/ebay won't allow the...