Why is Apple robbing me off my hard earned money? iTunes getting me unprovoked over a subscription I tried ending over two months ago, but can’t because it keeps saying I’ve a pending subscription that I’m no longer interested in😩

I'm sorry your post is a bit confusing.

Having an active subscription does not in any way restrict you form cancelling another.

If what you are trying to do is remove your payment method, then that is not cancelling a subscription. And will in fact not allow you to do so while a subscription is still active.

Follow the steps in the support document you posted from to actually cancel the subscription. If you are having an issue with those steps then tell us what that is.

Then you an contact Apple Support and request a refund for it by clicking here-> contact Apple Support