Delhivery — I have a item from to be delivered, which is not delivered but showing as delivered

I have an item from Zivame to my residence at Trivandrum, Kerala. Since Monday, 8th August, it is being shown as delivered at Zivame site, and already three days I am receiving sms from delhivery with different otp but the item is not yet delivered. Zivame has not provided me with AWB number, I have only their order number. Following is the message I received from Zivame on Monday 3.46 pm
Dear Customer, Your order no.[protected] with Zivame has been successfully delivered to you. We hope you like it and keep shopping with us for exciting deals.
Please do the needful as early as possible