<human>: TIFU by going to the bank. Recently I have been shoveling a lot of snow to save up money for a new laptop and a couple of days ago I got the last of the  checks that would pay for my new laptop. So I went into the bank and cashed $300 worth of checks that I had just gotten, It was as I was walking to my car as I noticed the problem, the bank teller had only given me $250... 
So I went back in not thinking about how they would confirm my story and told the bank teller. Big mistake, every single bank employee had to stop what they were doing and count EVERY SINGLE BILL in the bank. What was once a bank full of friendly people was now a room full of people(employees and customers) had to waste a half hour while a few people counted because I was too stubborn to take a loss of $50.

Could you distill the essence of the text into 1-3 sentences?
<bot>: Bank teller miscounted my money, spent an hAlf an hour of my (and everyone elses) time getting it back. Other people were not too thrilled about it.