Deactivating The Airtel BIS Plan? Here's how

Whenever you finish the data bundle allocated to you for Airtel BIS before the expiry date,you cant subscribe again until the it reaches the expiry date.And you already know that it is so annoying,you cant wait till the expiry date for you to subscribe for another BIS.If you subscribe without cancelling or deactivating airtel Bis,you will see a message telling you that “you are...