Welcome, m3ajak6, and thanks for posting! Though we can't see your account from this forum to double check, it sounds like this is an honest to goodness system error. Even if you didn't complete the port, as long as an additional line was added with its own number and that new line is still active on your account (and was not canceled when the port was canceled) it seems like that qualification would be met. Your purchase date seems totally fine, since the dates for the purchase were 12/21 - 12/24. I do know from experience when I worked on an escalation team with account access that if there's an error with the system, we have to wait until the promo is denied to submit an override, so that timeline rings true to me as well.
When all is said and done, it sounds like the promotions team has every intention of making it right in the end. But if you're looking for confirmation that this has been notated in your account, your best bet is to reach out to a team who can securely verify your account information and take a look at the memos. We don't have a safe platform to do that here; but I totally get the convenience of reaching out online. Our T-Force team on social media (Twitter and FB) do have the ability to gather your phone number and PW or PIN safely and can let you know what they see. I would recommend contacting them ASAP -- since there's some legwork that needs to be done here we want you to have the confidence that it's being taken care of!
Thanks again for visiting our Community, we hope you'll stick around!