Your hands are full. Do you
A) Put the package down and use the bell
B) Move the package to the other arm to free one hand
C) Use your elbow to hit the bell
D) Extend your eyeballs in a cartoon-like manner to ring the bell
You know, this one isn't as funny when you think about it. Nick lost his phone so it's possible the battery died. He then let Lever know he found the phone via payphone so that Lever isn't stressing about it. Perfectly logical.