Grubhub's GPS repeatedly changed my drop off address to another location 5 blocks away resulting in numerous misdeliveries and refunds from them. I stopped using it for and joined Doordash that has had inaccurate delivery drop off. Before I did so, I spoke to 6 grubhub customer service reps in attempting them to correct the address with no result. With some couriers who answered they phones (a minority) I was able to guide them to the correct drop off address and they showed me their order sheet that featured the incorrect address so the misdelivery was the app's fault not theirs. Though. when I previously stipulated face to delivery in an effort to forestall misdelivery the majority of couriesr would still drop off the order on the street by the loced front door of the incorrect address even when I contacted them by phone and texted with photos of the correct drop off.