They are also obliged to ensure the game is up and running for some X% of time. For those of you who do want a refund, now is the time to consult your local consumer council. You will have good grounds for getting a full refund.Quote from Dyzlol
Regardless, blizzard made the game. They decided to make it DRM. Thus, they have partial accountability for the instability of their product. No matter who is assaulting it.
If Blizzard don't play their cards right, this will be the beginning of the end. Although I do not condone internet terrorism, I have found it can shake up certain companies for their own good and also for the consumer. Companies can become slack, forget about the customer and become too profit oriented