Delhivery — Package not delivered even after out for delivery

Address:

58, pratap nagar, Manik bagh road, Manik bagh road

I ordered a package of books on 27 August and date of delivery showed 30 August, it has been 3 days and order has not been delivered
It shows out for delivery still order is not delivered
Also when we complaint on app, no response is there from the delhivery team, very poor service
Please do resolve the issue
Order number -[protected]
Arjit singh
Contact-[protected]