Ekart Logistics — Exchange shampoo from Myntra showing delivered when it's not

I was to get my exchange of dove shampoo from Myntra on 19.10.2023. The delivery guy came in the morning while I was away from home and my mother was there to receive the order but he didn't delivered the product saying that it requires some authentication from app. When I was back home I tried to reach the delivery guy through phone which wasn't connecting again and again. In the evening I received a message of the product being delivered. I raised a complaint on myntra on the day itself. After 3 days of complaint, Myntra shows issue resolved with status of logistics team showing product delivered. Now I again tried to reach ekart logistics but with no success. The phone number shows not connecting time and again.