How do I cancel my Apple Music subscription?

I received a bill today for $14.99 that abruptly let me know my three month trial is up. I hated Apple Music, used it twice. I clicked "report a problem" and it just disappeared, so now I can't do anything else about it. I'm legitimately concerned that I will just get another bill next month. I can't find a path to actually cancel my subscription, and I'm concerned that there is no question like mine on this forum. Is Apple deleting them all?

Below, there is a long list of products, software and platforms to choose from, but iTunes doesn't even make the list.