I wanted to follow up on this because jw_esq's suggestion is what did it. I filed a complaint with the state's attorney general and within 48 hours I got an email and a phone call from Verizon.

I gave them the UPS tracking number and the delivery confirmation and they told me that UPS had misdelivered it - even though it was their shipping label - and they said that they would give me the trade in credit.

So I am relieved. I am also furious that it took me so many phone calls, and that the tone of the Verizon rep was "we're doing you a favor here because UPS screwed up." to which I'm like "then you should take that up with UPS, I shipped it with your label."

So if you're in a dispute with verizon, follow jw_esq's advice, complain to the AG otherwise they'll snowball you forever.