Why MacWorld Magazine sucks

Back in 2008 I decided, on a whim, to send in a subscription to MacWorld magazine. I didn't like it so I didn't pay for the subscription and assumed that they would just stop like every other magazine subscription I've ever subscribed to. Usually the first issue is there so that you can see whether you want to subscribe. I sent them an email to cancel. Turns out that MacWorld magazine wouldn't let it go so they sent the bill to a collection agency. Since I don't want to have anything happen to my credit report, I paid the twenty dollars. Shortly thereafter I received MacWorld magazine again. I sent another email to cancel. They finally complied but I never got my 20 dollar refund for the subscription. This experience has tainted my experience with magazines. I may never subscribe again to any magazine. I'd rather just buy the occasional magazine at B&N or just read the vast information available on the internet.