Received empty box iphone 5S 32gb from UPS

Hi,

I placed a web order from store.apple.com on December 19, 2013 for iPhone 5S 32GB Gold and iPadMini Retina 16GB with Cellular Network.

Here is the web Order No: W453104123

on December 24, 2013 5:30 PM received both the packages from UPS I signed and took the both the packages and I tried to open the box I found the box is already open, inside the box I found another iPhone 5s Box with out any polythin wrap, i opened the iphone box and the phone is missing. Immediately i went out and look for the UPS guy, he already left.

I contacted Apple Support 1-800-MY-APPLE, It asked for my web order, and then it tried to forward the call to an executive and got disconnected saying no one is available right now please call later. As it is a holiday season no one is available.

Can any one help me from where should i start?

Thanks in advance.