Vodafone India — incorrect charges for data

Address:

Ahmedabad, Gujarat, 380007

Vodafone have charged me for data usage in Kazakhstan for 42 mb and sent me a bill of ₹32871/-. It is impossible because I was not getting any internet service from Vodafone in Kazakhstan and I only used airport and hotel wifi there.
When I registered a complaint at the Vodafone store, they said I will get a call in 8 days with a solution. I just got a call today with no solution and the guy who called me was the most illiterate guy with no knowledge of the system and did not have any idea of the complaint details too. H kept me on hold for 6 minutes and when I asked to talk to his manager, he became aggressive towards me and arrogant stating that the call can not be transferred as he has gone for lunch, thinking I’m a fool because there isn’t just one floor manager as I’m aware of how Vodafone works since i have been an employee of Vodafone too.