Amazon India — samsung galaxy m30 mobile and cover

I have ordered samsung mobile and cover on 27 january 2020. The expected delivery was 30 january. I got the delivery mail on 29 january that the product has been delivered. But i did not received. They sent an otp which is confidential, which they are not supposed to give it to anyone without entering the otp in the delivery agent's device. Till now i didn't get my order. Customer service is not taking any action on this. Please consider this.