If I donate to a minecraft server and get banned, can I legally demand a refund?

If I donate to a minecraft server and get banned, can I legally demand a refund? - 1

Added (1). It wasn't considered a donation, it was considered purchasing a rank.

No, it's a donation. You can't take back a donation if they don't want to give it back. You gave it for free.

No because it is a donation.