<human>: I was just on my lunch break and had to go to the bank. I fill out my deposit slip and get in line for the only teller that is working at the moment. At this point in time, an older white guy cuts in front of me and asks the teller if there was anyone working right now that could help him out with a loan. The teller politely says that the only person that can help right now is on the phone in her office and will be a little while and that he can have a seat and she will help him when she is done with the phone call. He then practically yells that he is "on a time crunch with an outside clock" and starts pacing back and forth behind me while loudly, and on purpose, shaking his keys making quite the racket. I didn't say anything to him but I wanted to.

Can you summarize the given text in a few sentences?
<bot>: old white guy is rude to a polite bank teller and then proceeds to cause a ruckus on purpose by violently shaking his keys.