i canceled my apple music subscription trial was charged after i cancelled

Not sure what your reply is supposed to mean. But obviously nobody on here can potentially refund you, fellow users don't have that ability.

To view your purchase history : See your purchase history in the App Store or iTunes Store - Apple Support or http://reportaproblem.apple.com

To contact Support : purchase history, http://reportaproblem.apple.com , the emailed receipt, 'contact Support' at the top right of every page on here, https://www.apple.com/emea/support/itunes/contact.html

Did you cancel at least 24 hours prior to its auto-renewal ? If you did contact iTunes Support via your purchase history, the emailed receipt, or the 'contact Support' link at the top right of every page on here