A department store received the following letter from couple to whom the billing department had written, requesting payment of a long overdue bill:

“Gentlemen : We have received you letter of the 23rd and would like you to know we have divided our creditors into three groups.

1. Those who will be paid promptly.
2. Those who will be paid some time.
3. Those who never be paid.

You will be happy to know that because of the friendly tone of your letter, we promoted you from Group 3 to Group 2.”