Jabong.com — fake call by jabong name

Yesterday i got a call from jabong that my name is shortlisted for the lucky coupon. The gifts are iphone plus or song tv etc but if i buy 5000rs then i will get the gift. The customer care person asks for my debit card details.
First i didn`t believe them but they said details of my past order from jabong. How they got the details. Definitely from a person working there leaks the data of the customer. Really there i no safe for customer details.
Even i mail regarding this jabong but still no response no action. If we mail regarding complain only we get the automated mail. Seriously this company is very worst for customer service.