Phone cards, of course, are also useful to adults who find it a convenient way to keep track of their phone bills and make long distance calls from any location. International calling cards are especially useful.

Be sure to do a bit of shopping around online to get the best bargain – there are many calling card companies competing for your business and willing to offer a good deal.

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If you don't get anywhere talking with the company when you have a problem or grievence then tell them you will file a complaint. But don't just threaten them with this until you have tried your best to resolve the issue. Many talk-show or news radio stations and some TV stations have a Consumer Hotline that you can call and get help with troublesome companies. In cases of outright fraud you might want to contact your local State Attorney General about the issue (National Assn of Atty Gen.)