I was having a mobile connection [protected] since last two year under advance rental plan. The connection expired in October, 2007. Without my written or verbal consent it was changed to monthly rental plan. On my calling customer care centre, I was given a commitment that the call charges will be ruppes 1 for mobile to mobile calls. I agreed to continue with advance rental of Rs.999 for 3 years. However, on receipt of first bill, i noticed...