Vodafone India — Fraud calls

In response to the complaint we lodge against Vodafone India Limited (shriram communication Private Limited) on 26/01/2016 and 30/01/2016, we got a call from [protected] at 4.39 PM saying that he is calling from VODAFONE company and insisted us to provide our DEBIT CARD details including number, Valid thru date and even CVV number to transfer the amount to our card which i have to receive.But fortunately i did not furnish the full details of it as in the case of card to card transfer only card number is sufficient. I really wondered what kind of idiotic things these VODAFONE executives are doing. I suggest to my relatives and even to my pals not to make any kind of contracts and subscription with VODAFONE india limited.