Vodafone website do not have sufficient information about deactivating vas vodafone mobile conect or vodafone live or any vas pack, you have to contact to customer care once to activate or deactivate plans and vodafone services. It is worse when you want to deactivate unwanted services.
Normally you get the setting when you easy recharge which is Sms Act Vl to 111 and to deactivate can Vl to 111or send Unsub VL to 111 or 144, don’t worry it is toll free. Most of the short packs are auto renewal specially the Rs 4 to 5  Gprs pack, So you should be care full to deactivate your Gprs pack before you go to sleep at night. Mostly they renew your pack at 7am morning,  but sadly after paying for the whole day you still get charged for the period of 00hrs to 7 am as the gprs pack is not activate in this period so if you want to go long take a longer pack of weakly or monthly pack and they are not auto renewed they cost you Rs28 to Rs 97 If you have Main balance from full talk time you can Use *444*4# or replace 4 with 28 or 97 or 98 depending upon the pack you use.
   After talking to the Customer girl she told me send Can gprs4 to 111 or 144  for more details www.vodafone.in/internet/pages/voafoneconnect_upe.aspx?cid+upe