I did something similar when I tried to get a refund from Blizzard for a month a WoW use. You get a free month, you register your email address, yet you are not told when your free time expires, nor are you informed when you will be billed.
So I contacted them, asked for a refund of the month, because I didn’t like the game and I barely played it. They decided that they would not refund the money because I had called just 3 days after the 30 day trial expires. Since I bought the game, I decided to sell it. NAY! Apparently Blizzard decided that they owned the game and the normal laws that allow you sell anything you own aka, phonograph (that is, the content on the disc). I forwarded them the link and explained that they cannot restrict me from selling or transferring the key/game on eBay. Later they responded saying that the note was passed to Blizzard's president and I will be contacted shortly.
Upon reading the response they agreed that if I sold my copy of WoW on eBay they would provide the recipient of my copy a fresh key that the person who bought my copy can use.
What about my refund? After 3 months of back-and-forth emailing they finally agreed to refund the whopping 14.95 charged to my visa. Now, that was fine, but I wanted them to pay for the interest I would have been charged had I left that amount on my Visa and allowed the interest to accrue. NO! They refused and simply stated that my refund was being "processed". This "processing" took 5 months! I was furious with them, how the #$% does it take 5 months to chargeback 14.95??!?!?! This whole thing started in December and ended...in JUNE!
I will never pay a monthly fee to Blizzard EVER! Their EULA is absolutely disgusting and completely violates the phonograph laws that allow us to own and sell the property we purchase. Basically, if you bought a car from Blizzard, and later decided to sell it, Blizzard would force you to impound the car, hand the keys over to them, and then they would in turn, sell it to someone else; all the while you are out of the entire amount of money you spent on purchasing the car. Now you can see why this is such a farce! Seriously, what is the problem with selling a game of WoW through eBay? I just can't comprehend what they were thinking when they concocted this absurd restriction, it is after all, a subscription based game!