Swiggy — delivery not received still it marked as delivered

I have ordered from swiggy order id [protected]. After waiting for 1 hour my order has shown delivered though i did not have received it. This happened twice with me. And i tracked the delivery guy 5 min back and seems his location was showing in my area only. This is not at all acceptable.
How can the delivery people mark the food has been delivered with out placing it. This app based people can simply add an otp system for that. Now after a long hour dis