I do not understand your attetude, but ok.
You Donated the service and recieved as a thanks some EC.
Thats how it worked.
Every online service can close from 1 day to another, no matter the reason and there is no responsbility towards the customers.
You just need to realise, if u write in big letters and with anger, it wont change the situation.
You think, you are the only one, who have lost something?
If you go elsewhere to drink a beer and at the next day u need to pee, you cannot ask for refund either, isnt it?
i would suggest to calm down, it isnt healthy that way.
stay safe