Hello, the only way to do this is by following the two steps below:
1. Take your current number and port it to another provider like lucky mobile. Port to the cheapest possible plan (15$).
2. Once that is complete, port that number once again into your late husbands account.
Voilà! You now worked around the public mobile problem of them not helping you. It takes a little effort but it's possible!
I am sorry for your loss. I know this is a difficult time for you. A little more information on your intention to change accounts will help us advise you further. You may also want to keep both accounts and just suspend the extra account for up to 89/90 days and reactivate for 30 days and suspend again in case you need the account to access online accounts that require 2FA verification. I have explained this in other posts to customers in your same position and how this can be helpful over the next few months or even years.
Feel free to contact me via private message if you need further advice and whether or not it is possible to switch accounts or transfer your phone number.
Oh my. So sorry to hear your news. And now you're here dealing with a phone service.
I'm not sure what your intentions are though. You both have accounts here? Is it just about the number? Are either or both accounts on the rewards system? Is either account carrying a balance?
Adding - I ask because you could just let one account drop off and carry on with the other.