i have no clue about how much you donated, but i can assure you that OVH's servers arent cheap either, and the choice they made were exacly to prevent ddos attacks, but if you make certain people mad they will attack with a ddos attack that is hard to prevent even for companies like blizzard.
I'm sure they are working for some kind of solution, buts thats gonna be very expensive, so i hope you keep donating, would love to get online soon.