It's miss-spelt (I think they thought it looked 'cool') as vodafone. The name came about from two companies that came together - Vodata and Vodacom or something... So the 'vo' part is 'voice' and the 'da' part came from 'data'... What does Voda translate to in Banglai?
What is Banglai ? As for the fuss over Airtel, it is indeed one of Vodafone's competitors in India. But its official website is www.airtel.in and not airtel.com