Box 8 — Food marked delivered but not received

I placed Box 8 order through Eatclub. After sometime, the order is marked delivered but did not receive the order. I called the delivery person. He said the order has been accidentally been marked as delivered, and I will have to talk to the office. But there is not official number to contact them, only chat. When I explained them the situation, they keep on replying that I will get the order and they are not saying anything else. After about an hour the delivery boy number has been switched off. They also clear the chat and start with new chat every 5 minutes.

Order date 7 April 2021 7.55 pm. It has been more than 2 hours, and no track for any.

Delivery person name - Shoeb Ammaji.
Chat person name - Sushma