USPS said they delievered my package but it never reached my mail box?

So I ordered a brand new Iphone 5s off of ebay because my other one was unfortunately stolen. When I did get the phone I wanted to exchange it because it wasn't the color I had ordered so I sent it back. The seller emailed me the tracking number so I was able to track it, it said it was delivered on the 29th of june (which it wasn't, not even a notice note was left in my mailbox because that phone was over 250 bucks it should of been required a signature right?) but I never got it. I contacted USPS since the package was shipped back via that mailing service and they said they would call me back and check with the mail carriers to see if they saw my package anywhere or remember delivering it. Weeks have gone by and they never ******* called me back. They don't even have a real customer service line. In conclusion I have decided to never ever ship via USPS again. But my package is still missing and my seller is refusing to give me a refund because the tracking number says it was delivered. I also opened up a claim with USPS and of course they denied it because the tracking number said it was delivered when it obviously wasn't. I'm so ******* angry, not only did I not pay for this phone (My mom is not very wealthy and she worked her *** off to try and buy me this phone FOR THE SECOND TIME) but I'm struggling and losing hope for my phone. Is there anything I can do? Is there anything ebay can do with or for me?

How to make a yellowed plastic iPhone case clear again?

My iPhone case was originally completely clear, with no tint at all, unlike now.
Over time, the plastic case has yellowed, and so it's no longer completely clear & transparent.
How would I restore this phone case to its former glory?
I have already tried washing it with soap, but to no avail.
Would bleaching work?
Anyone have any good techniques? How to make a yellowed plastic iPhone case clear again - 1

MY IPHONE IS A CLONE! WHAT DO I DO WITH IT?

I bought an "iphone" 6 plus from a distant friend. TURNS OUT THIS CRAP IS A CLONE. I don't know what to do with it! Is is possible to get… Like the real iOS software? What do i do?

How to connect to the inernet?

Please help me! My grandson told me how and I forgot!

Am I already connected? Do I have to call the cable guy or the milkman?

It's Sunday, so I probably didn't get any Emails sent to me, but still. My grandson bought me this iPhone (or whatever this thing is) and I can't figure out how to connect.

Why won't my iphone make calls or send messages?

I inserted a sprint sim card to my sprint iphone and the bars appeared on the left but i tried making a call and it won't work, i can't send messages either. The sim card is activated and i know the phone is sprint for sure.

Accidently clicked on pop up?

I may have accidently clicked on the pop up on safari on my iPhone that says "congratulations, you've won." I'm not sure though. Is this bad? My phone is acting normal. How do I tell if I got a virus from that?

How to unlock an iphone5/5s i found?

So a year ago, I found an iphone5/5s (not sure) in a cab. It was low battery so I was only able to turn it on a few days later. Now, the problem is the owner had reset the phone via icloud and now I can't access anything. The owner says "iphone lost. If found contact" but that's like a year ago so I doubt he still cares about it now. How do I unlock it?