All the regrets
6 years ago
Remember kids, don't give your money to artists who consistently take many commissions, don't show their slots and don't communicate. You're probably wasting that moneys... good thing I know plenty of honest artists who actually tell me what's going on!
FA+

Even if artists do eventually provide work months down the line, they should at LEAST be keeping in regular contact with you to notify about your commission status.
If you're not comfy with where things are, PLEASE at least reach out to them if you haven't done so already.
Maybe ask when you can expect a WIP, or at least negotiate a date for one?
If you have already done this then yeah, I'd express your unhappiness with the service and request a refund. If things go sour then get an Artist_Beware submission done.
It really bothers me when artists who're happy to take money for work don't seem to take it seriously. =___=
That's poor service. They got once chance to impress me or it's refund time.