Mydala — my main balance of vodafone is getting deducted every day without my consent

Though i didnt click on any thing, my balance is getting deducted each day. Once 49 and next day rs.47.. Even i contacted customer care but they are of no use.. I even tried to call the mydala company (The number i got from sms) but not getting response do look in to the matter. It is just that the money is getting deducted from my main balance without my concent every day. My number [protected] (Vodafone)