I did a pickup order a few weeks ago when of all things Tmobile SMS went down for 3+ hours. I couldn't go in the restaurant (covid) and I couldn't text them the parking # I was sitting at in a packed parking lot. I got a flood of about 50 texts a few hours later. Sat there for about an hour waiting for a $9 sandwich. I have no idea if they didn't get my order until late, or if they finally realized it was me or what. About 45 minutes in I decided to just give up on the day and take a nap, woke up to a door knock.