My first time using DoorDash and it was to order groceries at Aldi. I left instructions to have certain items refunded if out of stock while a couple items I asked for substitutes. The shopper assigned to me indicated on the app that they substituted two items (chicken drumsticks) with more expensive ones whereas when the package arrived, I had exactly what I ordered. So I was charged extra for items which were never substituted. Secondly, I had a coupon on the app that allowed me to get an extra item on my shopping list - a buy 1 get 1 free coupon. The free item never arrived with my order.