Q: unsubscribe Apple music

If you want to cancel it simply turn off automatic subscription renewal.

You may find the instruction how to cancel it here: Manage your Apple Music membership - Apple Support

http://9to5mac.com/2015/06/30/how-to-cancel-apple-music-subscription-auto-renewa l/

Cool, but I don't have this otion at all. What to do?

If it doesn't show up there go on you iPhone 6 Plus, Go to Music --> Click the little person in the top left --> Click View Apple ID --> Scroll to Subscriptions --> then confirm auto renewal is turned off

Thanks for response. I don't have such option. And it keeps trying to charge my card (which doesn't have enough funds so it loops and this bugs me)