Just went there, had not been to a Sonic in awhile, now know why so many have closed. I ordered a double cheeseburger without onions with mayonnaise, had to try to order three different times, she would not listen. When my burger comes out, it is full of onions, no mayonnaise, and COVERED in mustard. They offered to make another burger but I did not want one at that point and am now feeling kind of nauseated from what I ate.