Tata Docomo — way of address Verification is difficult

Address:

Bangalore, Karnataka

I have recently taken tata docomo Post paid connection for data purpose. In docomo store they said need to call [protected] toll free number for address verification, After 2 working days i try to call to number able to enter menu but after that i am not able to reach to address verification to verify my address. Really it's too bad the way of service to verify address.