I would suggest to speak with your networks customer services to have your account checked.
Also as a process of elimination to rule out the phone as the issue perhaps try your sim card in another phone.
If it's the sim card then your network can replace it via a Sim swap @nickynackynoo42
Daily Driver > Samsung Galaxy s²⁴ Ultra 512Gb ~ Titanium Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "
