Airtel — misguidance in showing offers

Address:

403726

Date of incident[protected]
clients no-[protected]
today at approx 8.00AM, i recharged my airtel no. by my airtel app of rs.399.
Offers expected
Unlimited Local + STD Calls (subject to fair usage Commercial Use policy) + 1 GB data per day (only available for 4G handsets with 4G Sim)+ for a period of eighty four (84) days.
AND MINE WAS A 4G HANDSET (REDMI NOTE 3).
I've tried to make a few calls after the recharge but of no use.I called the customer care immediately and they've replied me that this offer doesn't apply in roaming which was nowhere mentioned.This condition wasn't mentioned anywhere, I've checked everywhere(airtel official website, my airtel app, few other websites).
Screenshots are attached.