You mean your bank doesn't show you an account history? Get a new bank
Seriously, if you can't come up with a decent example then go home and try again.
You mean you actually believe everything you read, even banks make mistakes. See, I lived in a time before the internet, and cell phones. Things were simpler then. And even though they mailed (not emailed) me a bank statement, I still kept record of my banking to make sure everything was on the up and up. However, if you have that much trust in your bank, then your more naive than I thought.