Delhivery — Product not delivered yet shown delivered

My order was pre-paid, the part of which was supposed to be delivered on 16th August 2021. At the end of the day, it was notified that the product was delivered, however I didn't receive it . I never received any call from delivery agent . The second part of my order was supposed to be delivered today, on 18th August 2021. I didn't receive this either