Airtel — data pack - deceiving customers by false information

Address:

Kolkata, West Bengal, 700033

Contact no [protected]
While recharging a pack of 499 for daily data of 1 gb, it was disclosed therein that the handset should be 4g, now i am not avail the benefit of same as the service provide also seeks that the sim should also be 4g.
If that was the case then why this was not disclosed to me at the time of recharging. This amounts to decieving customers by not providing sufficient information.