When I bought Vodafone sim they give good offers, I used Vodafone services for 1 year but just after two months from bought they do not provide good offer like data packs and talktime offers while other operator do Airtel and Tata Docomo.
Also when I gone to hostel I am not able to get 3g signal while other operator 3g signals are available. Complaint processing is not upto time. After facing so much problems with Vodafone I changed my operator. If you want to used vodafone services in any region first confirm their services in that region.