Not sure what you mean by you searched the internet? Did you buy from Ebay or not?
You need to open a case for Not as Described.
Seller will need to send a postage label (if registered in Aus), or postage funds (if overseas) if they want it back.
Or they will need to refund.
Be prepared to upload at least one picture into the dispute as proof.
You've been here since 2008 - I'm surprised you don't know buyer basics?
