Airtel — cheated through airtel app

Address:

Mumabi 400013, Mumbai City, Maharashtra, 401209

I have an airtel number [protected]. I have recharged through airtel app.
While recharging through the airtel app, it was showing 1.4 gb data plus 400 mb extra per day.
But after recharge i am getting only 1.4 gb per day data.
Kindly see the attachment.
Provide me 1.4 gb + 400 mb extra.
The customer care are telling aapko jo karna hai app kar sakte ho.
They are giving only 1.4gb per day .
Kindly look into the matter and provide resolution