get 20/- cashback recahrge of 50/- on paytm mall app.
https://paytm.com/offer/recharge/paytmmall-20

Terms & Conditions:
Download the Paytm Mall App and log in using your Paytm log in credentials
After 48 hours, do any mobile recharge of Rs. 50 or more and
apply the Promocode 'PaytmMall20' in 'Have a Promocode?' section to get Rs. 20 Cashback
Promocode is valid only for users who download and sign into the Paytm Mall App for the first time
PaytmMall20 can be used 48 hours post downloading and logging into the Paytm Mall App
Promocode is valid for 15 days post sign in
Promocode can be used only once per user/device
PaytmMall20 is valid on Mobile recharge (pre-paid or post-paid) of Rs. 50 or more on Paytm
Not valid on Airtel recharges