Amazon India — Delivery Boy Cancel the order without visiting to home

I have order the Smartwatch on 13 Jan and it was ecpected to delivered on 15 Jan .

I called the delivery boy and he said he will reach at 8:00 PM IST.
But when i saw the App it mention that the order is cancelled
i don't understand without visting home how he can cancel without any communication between us he simple drop the message the order cancel.
What about our time .