Who I have the same questioned this topic

Back in November there was a trade in offer that gave you a billing credit if you purchased an iPhone 11 and if you traded in a  phone you would get a MasterCard prepaid giftcard based on the value of the trade in. Our family traded in 4 phones and expected 4 cards, only to receive 2. The other 2 were invalidated because "The line associated with this rebate requires an eligible device transaction". This is shown for the 2 unreceived cards, which we traded in a Samsung Galaxy S5 and iPhone 6s for, which are BOTH listed as eligible devices on their offer page: https://www.verizon.com/reusable-content/offers/hol1035-get-400-Mastercard-Verizon-Unlimited.html.

We were TOLD by representatives in the store that our devices were eligible, and now its being invalidated because they are not? Are we being blatantly lied to on the https://www.yourdigitalrebatecenter.com/#!/check-my-status site which says our rebate is invalid because our devices aren't eligible so that they won't have to give our promised giftcards? 

We pass all other checks otherwise. We ported directly from another carrier and into the unlimited plans. We did the exact same thing for 4 phones yet only received 2 cards, the only difference being that the 2 unreceived ones were older devices (which were still eligible based on the offers page/representatives)