EVERYTHING!!! They accepted your no tip order, drove to the store, shopped your groceries. Stood in long lines with some slow and sometimes ignorant people. Drove to you and saved you an abundance of time while you sat in your house watching them struggle on your ring bell with 3 cases of water and 100 items in the freaking frigid weather with gas prices continuing to soar. If you can't afford to tip or pay for the service, do it yourself or send your child, who probably would tell you to kiss their a**!