Well, I didn't get to eat any ice cream last night. Both of those suggestions were too far away from where I was, but I will keep them in mind for the future. I got home and found a place in Villa Crespo, Las Malvinas, that actually does deliver to my area and had good reviews. I ordered and after an hour and 15 minutes of waiting, I called to see what was up. Oh, the guy rang the bell exactly one building over and no one answered, so he left. Sigh. I thought it was weird when I ordered and they didn't ask for my phone number, but upon hanging up I thought, well, food delivery isn't rocket science and I'm really close to them, so it should be fine. Oh well! I'll try again this weekend.