Airtel — have insufficient information about 4g sim updation for 10 gb data

Address:

Kotdwara, Uttarakhand

We were provided with the information that we would be getting the day 10 gb data as soon as we upgrade our airtel sim into 4 g data so after getting updated sim we didn't got that offer as offer possibly received in 3 days. But even after calling to the customer care also they were responsing very rudely and no positive response was there regarding our query and problems we are totally unsatisfied and feel very unjustified that we are using airtel