From what I have read in this forum it is still in CC but not in CC 2014.
You can have both on your computer at the same time.
Please refer to the below article for the workaround for the oil paint in Windows.
If you have a creative cloud subscription then you are entitled to use CS6, CC and CC2014 versions of Photoshop.
You can download the CC or CS6 version to use the oil paint feature there is no need to go for a refund.
Thank you for posting on Adobe Forums.
Oh, cool. How do I get to cs6?