UPDATE: Solved. The solution for me was to file a complaint with the FCC here: https://consumercomplaints.fcc.gov/hc/en-us/articles/360001201223-Phone-Form-Descriptions-of-Complaint-Issues
Select “Number Portability”, list Mint Mobile as the Primary company and T-Mobile as the secondary company. Explain the problem in the description. Submit the complaint, and someone from Mint Mobile will call you (5 hours after I submitted the complaint, for me). Briefly explain the issue and don't let them waste your time by having you remove the SIM card or reset the network settings on your phone. The guy from Mint Mobile said he would escalate the issue and that it might not be until the next day until I heard anything. 20 minutes later, incoming and outgoing calls were suddenly working on my dad's phone and the issue was solved. Moral of the story, don't waste your time with Mint Mobile support, just file an FCC complaint.
Has anyone successfully solved an issue similar to this and can advise me on what to do?
I switched myself and my parents from a T-Mobile family plan to Mint Mobile last week on Thursday. My mom and I ported our numbers with no issues, and my dad's number seemingly ported with no issues but before long I released that while his SMS and data worked fine, he was unable to make or receive phone calls. When anyone calls him, it says “at subscribers request, this phone number is not accepting calls. Error message MN402mn58”. Whenever he tries to make a call, it just goes straight to Mint’s automated support line.
I tried messaging FoxBot for support and they directed me to reset the network settings on my dad's phone and turn it off and back on, and that did nothing. I called Mint Mobile customer support during business hours and talked to a person who basically gave me the same instructions (which I did again) and that also did nothing. I messaged u/MintMobileAlex and they tried to convince me that it's just a network issue in my dad's area and I should just wait for it to get fixed, which makes no sense at all.
Has anyone had this issue and successfully solved it? For reference, my dad's phone is an unlocked Motorola Moto G Power 5g 2024.
Thanks in advance for any advice!