"...If a situation gets so bad that your credit cards don't work..."

When could the almighty credit card not work!?!?

1. When the store won't take it.
2. When the 800 phone service goes down.
3. When the power is out.
4. When you are buying from someone other than a business.
5. When you are out of cell service.
6. When your bank says so.
7. After a magnet ruins your card.
8. And on and on and on.