Me too.  Didn't know numbers started with 0.  I am not sure I want to answer it.

This is the second time I've gotten a call from these +918-0 numbers. Didn't answer either time, no message was left either. I've never heard of any number prefix beginning with 0 and the + I would assume is overseas. Seems like after I registered on the "Do not call" list, I've been slammed with odd texts and calls.

Here's what I found after some searching...
Mobile Number 9180594744
Service Provider BSNL
Area ANDHRA PRADESH (CDMA )
"BSNL" info...
Bharat Sanchar Nigam Limited is an Indian state-owned telecommunications company headquartered in New Delhi, India. It is the largest provider of fixed telephony and fourth largest mobile telephony provider in India, and is also a provider of broadband services. BSNL provides almost every telecom service in India.

Calling the number back is pointless..u get message p u l then hung up on

These idiots keep calling and calling.  I don't answer and I can't block them since I have used up the number of blocks I have.  I am so tired of these calls....

How can I block these calls?