This is akin to getting mad at the McDonalds cashier for informing you of some corporate McDonald policy.
Anger directed at the customer support, who generally doesn't have the authority to make changes (especially at the scale desired), is misplaced and doesn't help anyone.
The whole situation is frustrating, but lashing out at some random customer support agent that happened to get your ticket makes me hope, in a similarly petty way, that they don't resolve this issue until you manually unsubscribe from all the notifications.