Airtel — problem with airtel data balance

Address:

Sector 12 , dwarka, new delhi, New Delhi, Delhi, 110078

On Monday 26 august 2019, i had recharged my phone with the Rs. 129 pack. The message i received thereafter was that the pack provides unlimited national calls, 2GB data and 300 SMS valid for 28 days!! (I will enclose an image of it for proof)

However, yesterday onwards (3rd september 2019) my data balance says 0.0MB which is a terrible thing. Very unfortunate.

Please do reply as soon as possible to help me out! (My number is [protected])