Can I please request a refund on something I didn’t know I had a subscription too?

Use the method described in the Related Article above. They generally won't be obligated to grant one.

The people who answer questions on these boards are mostly other customers, not the iTunes Store staff.

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Cancel it by following the steps here: link-> If you want to cancel a subscription from Apple - Apple Support

The follow the steps in the support document you posted form to request a refund.

If you need further assistance, contact Apple support directly: link-> Contact Apple Support