Mr.Delivery does not attend to their queries

I ordered on Mr.D but forgot to change my delivery address. I noticed this mistake from my side as the restaurant has accepted the order. I immediately logged the query and recieved a confirmation email for the query. The driver picked up the food, I contacted driver via text letting him know about the address mistake. The driver still went to the incorrect address. The driver got to the incorrect address and told me he's waiting for the office to let him know what to do. After 20 min of him waiting and not getting feedback I call the number for help. Our call got cut before we finished the conversation with the first consultant. I called again the second consultant tells me she'll log a query for me. I call again the third consultant tells me if I don't pick up the food at the address where the driver is I WILL NOT GET THE FOOD AND WILL NOT BE REFUNDED FOR IT. So I ask my neighbor to fetch the food from Mr.D my neighbor confirms he's not there. I call again the next consultant tells me the driver has been instructed to come deliver the food at the address where I am. On the app my order was then canceled when I call again I'm told that I won't be getting the food and won't be refunded. After complaining they tell me they can refund me 50% of the order. I asked to go fetch the food at the restuarant rather they say I can't. WHERE DOES THE FOOD GO OF I CAN'T FETCH IT FROM THE RESTAURANT ALSO?