Vodafone — i cant listen the voice of others companies connections

Hi,
This Anupama from hyderabad taken a new postpaid connection from vodafone the out goings calls are creating a problem for me if a call aperson which having connection other than vodafone i cant listen there voices only for vodafone only iam listen the voices from 2days i need immediate action on this.

Anupama.
[protected].