Trying to get proper phone number onto Apple account
So I recently switched carriers, and the temporary number that they gave me while my phone number transferred over is what is stuck on my apple account now.
If I send people an iMessage, the temp number shows up rather than my actual number. I tried adding in my actual number, and it just kept giving me an error of ‘this phone number is already in use with another account’, even though I’m in the proper Apple ID account.
I factory reset my old iPhone, didn’t use my Apple ID to set it up, went back in to try again to put my ACTUAL number and it still keeps coming up that my phone number is in use with another account.
How can I fix this?! I don’t even want to send iMessages at this point because now it’ll confuse people thinking it’s my new number, which it’s not.
iPhone 11, iOS 13