It is easy to get your data back now with Android App called Databack. This app counts your data while you are using on 2G / 3G / 4G / WiFi then it refunds your data. You can refund data by recharging your registered mobile number.
All you have to do is register yourself with your mobile number and while registering enter Referal Code : NAK61. You can also earn referral data which helps to raise your MB’s.