inadvertent download

Hi,

I couldn't find a way to have this problem addressed elsewhere. My son wanted me to download MINECRAFT so he could play online with his friends. However, it appears that I downloaded the wrong one. His Mac currently has java version, which I did not notice until after he tried to link up with his friends and was unable to.

Can I get a refund and can you direct me how to download the regular version of MINECRAFT? As you can tell, I am not tech savvy.

 

Thanks,

Emily