Hello Blazudnug,
It sounds like you actually set up a monthly subscription, which would indeed be the only option for ~30 days of game time.
No worries though, if it was a mistake and you haven’t used the time a refund should indeed be possible. If you tried the self-service immediately after, the order may still have been pending at which point it would indeed fail.
When that happens you always have an option to send in a ticket for manual review though, which is sounds like you did - so thanks for that!
Past that you just need to be patient really. We are dealing with a large number of support requests right now, so it’s normal to take a few days to hear back.
Just keep an eye on your ticket and I’m sure this can get taken care of before long!