The Million Dollar Mortgage
One of the owners of the company I used to work for was looking at his bank statement one day and saw a bunch of extra fees that he thought were excessive. He called the bank to find out what was going on, but I guess the person at the bank couldn’t explain the fees or was short with him and wouldn’t waive any of them.
In retaliation, he decided to close all his accounts with that bank. This involved paying off the rest of his multi-million dollar mortgage in cash. I was so shocked that he basically had enough cash sitting in his checking account to pay off his full mortgage, but preferred to take out a mortgage rather than pay for his house in cash.
When the mortgage department at the bank realized what had happened and how much interest income they were going to lose out on, they begged him to come back and refinance, but he gave them a hard no.
Story credit: Reddit / HalfAgony_HalfHope