I need some advice. Refund or wait?

[thatonejackal.livejournal.com]

Hello there, I've been a lurker of Artist Beware for quite awhile to help me warn about who to do business and such. Now I'm looking for a little bit of advice from the community. This is my first time posting on here so bare with me.

On March 5,  I've commissioned a certain artist (not saying names yet until if I should make an A_B on them) for a $30 colored sketch. I sent them the payment on the same day we talked about it. I knew it was going to be awhile since other people had slots and such, but then the artist decided to take on more slots of different projects like icons, sketches, pictures, etc. So this started to concern me a bit, so I noted them about it and got the usual message "I'm working on it, just busy" then another month later I noted them again with no response to it whatsoever until I had to leave a comment about my commission in another journal of them taking commissions again, same response as before. So I started to look at previous journals and found out there's a huge list of people the person still owes art from.

So I've been wondering about it for awhile and don't know what to do. Should I just wait on it and hope the person does it or just ask for a refund?