Courier unable to locate customer’s address

An order was placed at Amazon.in on 5 July 2017, and the item was sent by blue dart courier by the seller. The buyer received multiple smses on 8 July 2017, that the item was out for delivery, however despite leaving all the work to wait at home for amazon order to be delivered, the item was not delivered on 8 July 2017 . The customer waited at home till 6.30 pm and could not go shopping, did not have lunch, because of the smses which bluedart and amazon sent to her.
Now at around 8 pm on 8 july 2017, blue dart and amazon are updating the status of the address that “Courier unable to locate customer’s address. “
A large number of items have been earlier ordered and delivered from amazon and delivered by blue dart at the same address without any problem at all, however in july 2017, now blue dart is saying that “Courier unable to locate customer’s address”.
If the courier person is new and cannot locate the address provided, why did they not make a phone call and ask for directions or was the phone call blocked by the google, tata sponsored R&AW/CBI employees
For almost all houses in the locality, the plot number is provided .
Waiting for an online order to be delivered is a major waste of time.