Cancel subscription

Hi, I’m wanting to cancel my hayu subscription but I’m not able to do it through hayu and it’s set up with iTunes so I need to contact your selves. I followed a link to try and do it on my settings, however it says I have no subscriptions. On the email from hayu it says “If you have trouble to complete these steps, we strongly suggest to contact iTunes support and request a manual cancellation from their end.” So I was wondering if you could help, thank you.