No SIM

Today, out of nowhere my phone threw an error that it has no SIM. it's an ESIM and has worked for 2 years. Now when I go online to try and download the SIM it's showing a different IPhone has my SIM even though it recognizes that I'm on the website on the phone that I have been using all this time. I can't call the help line, the chatbot doesn't do a damn thing. What the [Edited: Language] am I supposed to tonight?