A customer has just told me that the bank's wed site is advertising a special offer - a credit crad with 0% interest.Is it true?" he asked."Of course it isn't!" yelled Mr Williams. "Don't give any new credit cards to any of our customers! Now go back to work!" The clerk disappeared.The minutes became hours and Mr Willliams became more and more agitated. Robbie continued to look at the puzzle perplexed, and Belinda continued to cry. Suddenly Robbie had an idea. "I know what to do!" he shouted. His father jumped up. "Have you solved the puzzle?" he asked. "No, but I brt my friend Joe can help us. I'll send him a text message on his on mobile." Mr willliams sat down again while Robbie sent the message.