You can avail the offer for the 3 month Airtel Recharge plan through ICICI Bank’s Bill Pay service available on RIB and iMobile Pay platforms.
iMobile Pay:
Log in to iMobile Pay > Click on ‘Bill Pay, Recharge & FASTag’ > Click on ‘Prepaid/ Recharge’
Retail Internet Banking:
Log in to RIB > Pay bills > Mobile recharge > Browse and select plans