Incoming calls blocked or diverted after iPhone 12 Pro Max eSIM update to iOS 26

I’m using eSIM on my iPhone 12 Pro Max, after updating to 26, my incoming calls blocked… I’m in big trouble now it’s affecting my business badly, before I’m receiving more than 200 hundred calls in my phone for my business purpose

already complained in Zain Saudi Arabia customer care department, as per the their information my line are perfect. They cancelled all incoming call barring or diverts, unfortunately the problem still facing you can also try to call +9***********5

[Edited by Moderator]

Original Title: AFTER 26 UPDATING, INCOMING CALLS BLOCKED OR DIVERTING OR TO UNKNOWN DESTINATION