Airtel — cancelled my order without my permission

Address:	New Delhi, Delhi
Website:	Www.airtel.in/onlinestore

I order iphone x on nov 3 from airtel online store airtel.in and made the payment.
It is supposed to be delivered on 7 nov.
But on 7th november i got a message that the order is cancelled thought i didn't cancel it and in the morning on 7 nov i even got a call from airtel executive as i registered a complaint on [protected]@in. Airtel.com for not recieving any message about dispatching of product and he said that the phone will be delivered to you by 9th november
My order id on airtel.in is 10013118
The no. Through which i booked the order is [protected]
And for any further information please contact me on [protected]
Email id [protected]@yahoo.in
Kindly take this matter very urgently and take appropriate action as soon as possible
Thank you