Number you have called is not assigned

[Mathusudhanan]

I used to call my mom whos in india 

during the initial days mu calls used to connect but far the past three days when im trying to call my mom or anyone i get this msg number you have called is not assigned 

I would kindly like to know a solution for this problem 

[FidoStephane]

Hi there @Mathusudhanan 

If you're calling the exact same number and all of sudden get that message, the issue is most likely with her line 

Do you have any other way of contacting her to ensure her line is still active? (FB, IG, email, etc.)