Receive up to $504 promo credit ($180 w/Welcome Unlimited, $360 w/ 5G Start, or $504 w/5G Do More, 5G Play More, 5G Get More or One Unlimited for iPhone plan (Welcome Unlimited and One Unlimited for iPhone plans can't be mixed w/other Unlimited plans; all lines on the account req'd on respective plans)) when you add a new smartphone line with your own 4G/5G smartphone on an eligible postpaid plan between 2/10/23 and 4/5/23. Promo credit applied over 36 months; promo credits end if eligibility requirements are no longer met.
$699.99 (128 GB only) device payment purchase or full retail purchase w/ new smartphone line on One Unlimited for iPhone (all lines on account req'd on plan), 5G Start, 5G Do More, 5G Play More or 5G Get More plan req'd. Less $699.99 promo credit applied over 36 mos.; promo credit ends if eligibility req’s are no longer met; 0% APR.
I am having this same issue with the new line that I just added to my account. I went in this evening and changed my Share Name ID on My Account. Hopefully this resolves the issue, I did contact Customer Support via chat this evening, and they told me this typically happens when someone else had the number before you but clears up once it is added to your account within 24-48 hours.
I hope this helps with your situation, it seems that are situations are very similar with regards to the issue we're having with someone else's name showing up when we make a call to someone else, even on a land line with my issue.
I will keep you posted and will update if what I did this evening indeed fixed this problem.