Amazon India — Product is not delivered and sending information like product delivered

Address:	682030
Website:	www.amazon.in

Hi,
My self Tonny. I have order Zebronic blue-tooth Speaker from amazon .expected delivery date was on 2nd July 2016. Product is not delivered on that date . Later the delivery date was changed to 4th July 2016. On 4th July i got a message from amazon confirming that product will deliver before evening i waited till evening but the product is not delivered. So i call the customer care executive and tell my concern. customer care executive told me they will check with courier team and update me. after some time i got a message like "Package was handed directly to customer signed by me".
But i didn't even receive any call or any other intimation to collect the product. then how can i collect and provide my sign. Already this has been escalated by Amazon.waiting for their response
Order ID :[protected]
Amount : 2518