Vodafone India — advertisements on outgoing calls

I have Vodafone prepaid, and subscribed to their 496 pack (1000 mins monthly plus 1GB daily).

When I make an outgoing call, I get a Vodafone advertisement that starts in Hindi - press 0 to skip this message - and get advertisements about some new offer or plan.

This is very irritating - most of my calls are work related, and to postpone an important call to listen to advertising is very frustrating. And this after I'm paying them for service. I have to again turn on my screen and get the keypad to press 0, and waste another 10 seconds.

I have emailed him, but got no response. Tried calling complaints number (198), but it automatically hangs up. I don't get any of this nonsense on my Jio number (so far), so will start using that more now.

Please stop this otherwise I'll have to consider changing my number...