[Resolved]  Idea Cellular — calling problem while incoming and outgoing

I have full network in my phone but when i try to call anyone i am not able to call same problem for incoming calls also when anyone wants to call me. They will got either engage tone but my phone is working on internet and massage. If i able to use massage and internet service then why calling service is stop without any before information. This problem is coming from friday 30 nov 2018 eveing and still is not resolved.