Refund is possible but not guaranteed. Its 50/50, customer support will side with seller/buyer, depending on situation.
If what you get is poor work but the seller delivered what was promised via gig page, chances are support will side with seller. If the seller delivers stolen, plageriazed work and or rude/abusive, chances are support will side with you.
My advice, when you find someone you like, order a small - easy project for $5 or $10. That way you can test their communication skills and work ethics. If that goes well, then order the $100 or more gig.
Warning: Logos are the most stolen, plageriazed and/or poor quality gig on 5r. There are way more unqualified sellers in this field than any other. That being said, there are some really, really great ones too - you have to dig deep to find them.
$5 won’t get you much. $60 could also get you stolen from 1st page of Google image. Don’t base quality on price but rather sellers ability to communicate well. Some are taught to give buyers short answers so you won’t know how bad their communication is.
Edit: I am speaking from my experience.