I’m sorry to hear that you haven’t had luck in requesting additional shuttle service, but I’m sure that Transportation Services will track feedback on this issue for the future when they develop new schedules. In the meantime, I would recommend taking the shuttle to the Reservoir T-stop, walking from there to the C-Line at Cleveland Circle and taking that three stops to the Star Market. If you don’t have access to a car, that is probably the easiest grocery store to get to from here. Alternatively, you could try to organize trips with friends – either asking a friend to drive you or meeting up with a group of car-free friends to share a taxi, Uber, or Lyft to the grocery store and back. Good luck!