UPS lost my package, T-Mobile wont do anything about it

I am going through the same situation now!  What a nightmare!  I have been calling every day, multiple times, and asking for supervisors.  They promise to call me back, but never do.  My phone was scheduled for delivery last Monday, and I knew that morning that it was lost.  The package was never scanned at the hub, so was never placed on a truck for delivery.  UPS showed preparing for delivery, which was basically a lie since it never had anything more than the original scan when it left its destination.  Supervisor told me I needed to wait until yesterday.  Of course no phone call back.  Per a conversation yesterday, a request was put in to send me a new phone.  Honestly I think they are full of hot air!  I will keep calling until I get my new phone that I paid for!