Delhivery — App showing order delivered but I did not received

Hi, I need help on this matter, I have been trying to reach delivery customer service, but got no response.
I Have not received my parcel, but it's showing as it's delivered on Sunday. Where did my parcel go? The seller who had sent the parcel i had already raised a complaint, but got no reply from your side.Is this the way you people make money by stealing others goods ?? If not then I want a call back on this.

We need to take legal step against you for sure .

Sharing the pictures of the time of delivery.