I used vodafone postpaid connection from 2010 to 2013 for three years. Its network was good. Actually it was a cug plan where outgoing was free for the all members of our company. initially its bill was also satisfactory enough until I used internet.
When I started using internet, I was just browsing facebook for only few minutwes a day. in the first month my bill was around a thousand rupees. but in the next month my bill amount surpass my previous month bill in just a week, it was 2500 while my browsing frequency was similar to that of last month. than I stopped using sim. than I talked to sales executive who settle very less amount than that of bill amount. than I switch from Vodafone to other.