Dear Member,
We do understand your situation. Order once placed can not be cancelled. Though we offer 5 days for seller to dispatch the product you've purchased, most of our sellers dispatch it well before. Had you contacted your seller,yet? Please do it. Contact the seller via 'Contact Seller' link avaialble in your 'My eBay -Purchase Hitory' section.
We are sure that the seller will help you with your concern. all the best! 