Many people don’t realise that you can dial US Toll free numbers (800) from overseas. The calls aren’t toll free, but with calling cards at about 1 cent per minute it’s cheaper than most local calls.
In Australia, dial your calling card access code, enter your pin, then dial the international access code + US country code (1) + area code (800) + number
e.g. calling card access number + pin + 0011 + 1 + 800 + rest of number.
Alternatively if you have free international minutes on your mobile/cell service you can dial
+1 800 GOT JUNK will get you the North American call centre of 1800-Got-Junk