purchased ringtones alcatel

I just purchased the Alcatel go phone (have been a go phone user for years and this is my first time with a keyboard and a camera!)...  When I received it, I went to the app to purchase a ringtone and purchased a song which was deducted from my balance.  However, I cannot find the song anywhere nor determine how to make it my ringtone.  Can anyone assist me?  Thank you!