It is very strange that the phone is not showing as posted.
The phone was listed with Simple Delivery.
This is the service where Ebay provide a label and you print and use it.
Did you use the Ebay Simple delivery label or did you buy a label independently - either through Ebay or from the carrier?
Your response to that will have a big effect on any advice you can be given, so it is important.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)