Airtel 10GB internet offer on closed sim

Airtel giving their customer 10gb internet+10gb facebook Data on closed sim. and also giving speacial call rate airtel to robi and and any oparetor.so I will show how to take this offer and all terms

Airtel 10gb internet offer Details:

First of all your need recharge tk21 then you will get 1gb internet on your closed sim offer.and you also get 0.5 paisa sec/ airtel to airtel and airtel to robi.and others oparetor 1paisa sec/24hours.

You can check Internet balance *8444*88#
Validity 10day and usage time 24hours

special call rate validity 90day

You can check for get this offer dailing *999# for eligibility.

if you have any question about this offer
So you can comment below on comment box thanks.