You've sold that same camera twice already - did you have 3 of them ?

Camera equipment is one of the most favoured targets by scammers.

Or hackers of other peoples' eBay accounts.

Other members cannot do that for you

But you seriously seriously need to read the selling basics before you even think of selling something for almost $3000 when you have zero feedback as a seller

You are an utter dream for every scammer buyer on eBay

Have you been verified for Managed Payments yet?

If not, you will never get your funds from any sales 

Honestly, you must read all you can about selling or you are going to be in a world of pain

Scammers seek out sellers like yourself, PLEASE don't become another victim, because eBay will side with the scammer