When did you buy this item? If recently, that is within 30 days of the item's last estimated date for delivery, you can send the camera back at the seller's expense for a full refund. Waste no more time trying to message you have a 30 day window here, only.
If in time, proceed this way. Go right of the item in your Purchase History, and from More Actions select Return this item, selecting the reason... Item Does Not Match Description or Photos.
The seller has 3 days to accept the case, if they don't , you need to escalate on day 4, or within 30 days, and eBay will step in and force the refund.
If the seller wants the item back first, they need to pay for a fully tracked return postage. On receipt of their item they have 48 hours to refund you. Again, if they don't, you escalate the case.
Do not close the case early for any excuse or promise the seller may give, and do not forget to escalate.
If you are out of time to claim a refund go to your Purchase History page to the right of the item there from More Actions there is a link ..... Contact Seller. Hopefully they are still registered with eBay , if this was a recent sale, they would not have been able to close their account.
@ly_23682