I was with Vodafone for about two years, I requested them to change my plan to basic then I called then and told then not to change my plan. They gave me the confirmation that my plan remains the same, after a month a received a bill of thousand rupees and they informed me that my was plan was a basic plan and I charged for internet usage, then I escalated the issue in the meanwhile they blocked my service as well. Painfull days with the worst customer service, please beware of Vodafone service