One night at an economy motel, I ordered a 6 a.m.  wake-up call.  The next morning, I awoke before 6, but the phone did not ring until 6:30. 

"Good morning," a young man said sheepishly.  "This is your wake-up call."

Annoyed, I let the hotel worker have it.  "You were supposed to call me at 6!",  I complained.  "What if I had a million-dollar deal to close this morning, and your oversight made me miss out on it?"

"Well, sir," the desk clerk quickly replied, "if you had a million- dollar deal to close, you wouldn't be staying in this motel!"