['Last weekend at walmart the cashier gave me too much change, even though I noticed this i kept it', 'How much did she give you over', 'I gave her a 10 and she gave me change for a 20, so 10 bucks']
Most places will make her replace the 10 so you should really go back to there and explain what happened
Last weekend at walmart the cashier gave me back too much change and i kept it.