Delhivery — Regarding order not delivered on time

Address:

Wadrafnagar (497225)

The order is to be delivered today and is also out of delivery since 10 in the morning but at the end of the day they changed the date to next day for delivery, how much i have to wait for the them, even they didn't called to inform that the delivery cannot be take place today and also they didn't gave the agent no. So i can contact him.