An old lady went to her bank, handed her bank card to the teller, and said "I would like to withdraw €10".
The teller replied: "For withdrawals under €100, please use the ATM". The old lady wanted to know why... The teller gave her back her bank card and said in an irritated tone: "These are the rules, please leave if you have nothing more to do. There is a line of customers waiting behind you".
The old lady remained silent for a few seconds, gave the teller her card back and said "I would like to withdraw all the money in my account".
She then checked the old lady's account balance. She nodded, leaned over and said respectfully "You have €300,000 in your account but the bank does not have that much liquidity at the moment. Could you make an appointment and come back tomorrow?"
The old lady then asked how much she could withdraw immediately. The teller said she could withdraw any amount up to $3,000.
"Well I would like to withdraw $3,000 please".
The teller kindly handed her $3,000, with a friendly smile. The old lady put $10 in her purse and asked the teller to deposit $2,990 into her account.
The moral of the story is: Never underestimate old people, they have spent a lifetime learning.