6. He received something in the mail that he has never ordered. Does he have to pay for it?
Mr. B does not owe any money if he receives an item that he has never ordered. If he gets bills or collection letters from a seller who sent him something he has never ordered, he can write to the seller stating the facts and ask the trader to take the goods back. If the bills continue, he should insist the seller to send him the proof of his order. If this still doesn't stop the bills, Mr. B can try to seek assistance from the Consumer Council.
If Mr. B sent for something in response to an advertisement claiming a free gift or trial period, but is now being billed, he should re-check the whole advertisement in detail. It may say something about charging shipping and handling, or worse, he may have inadvertently joined a club or subscribed to a magazine. He should then write to the seller offering to return the goods and stating that he believes the advertisement was misleading.