Reliance Jio Infocomm — jio phone pre booking cancellation

Address:

New Delhi, Delhi, 110043

I rupender dagar booked my jio phone (India ka smartphone) on 25-august-2017.
I have not received any phone yet it is over two months now.[protected]
And even after numerous mails to [protected]@jio.com, to cancel my order.
They have not cancelled my order and are saying that it will take some more time to deliver my phone.
I want to cancel my order but they are not cancelling my order at all.