Google Play Music All Access

[AC Question]

Okay so I recently downloaded Google Play Music All Access (trial) just to try it out.I kinda liked it but wasn't really for me so I tried canceling it - which I couldn't because there was no CANCEL on the app page. I could only see UNINSTALL and OPEN at the top. I'm near my billing date and I really don't want to pay for the app. What do I do? Thanks guys.