Credit card companies are really cool about fraudulent charges on your account IF it's the first or second time. Seriously, these things happen because of thieves and bad luck but if you ever make more than 2-3 claims no matter how honest and how much proof you have, the credit cards will never help you out ever again.
It's the same with the car insurance. Once you make your third claim you'll have a VERY difficult time finding an insurance company who'll take you. Now imagine that you get your credit cards and car insurance beginning at 18 and live to be 80, that's 60 years where you'll only be able to make 2-3 claims without penalty.