Help- line “deactivated” when MIL was told to use my upgrade

Title, basically. My MIL is horrible with tech, and despite us telling her multiple times to always go do these things in store she keeps calling in and making phone changes.

This time she called in to get a new phone for herself and her husband due to “battery issues”. (Their phones have insurance, she just doesn’t understand the difference between insurance claim and upgrading/replacement)

Well 2 lines were eligible for an upgrade so for whatever reason they talk her into using those two upgrades. Ever since she initiated the “upgrade” phones to be shipped, the 2 lines impacted (mine and my sons) have had 0 cell service. She claims to have called yesterday and was told my line would have service back within 24 hours, which seems excessive to me but whatever. Fortunately I have a work phone I can use for emergencies.

Anyway, what do I do? Is there even anything I can do? Still no cell service. I’m not an authorized user. And I truly doubt she has any idea what she is even telling or trying to explain to the ATT rep over the phone.