Crazy thing happened yesterday at work.

As I stood and waited for patrons to come, at...

18:59pm started a long set of prank calls that lasted 'til 19:04pm. 11 pranks altogether.

Then a 5 min break. (like this person went to do something)

Last and 12th prank happened at 19:09pm.

Who could it be?

If I was a sleuth and put this all together, 11 pranks does spell J's name. But if it is J, then why the 12th prank 5 mins later???