Not watched NetFlix in months? Keep meaning to cancel payment insurance on your credit card? Signed up for a Graze box but never eat it? Cancel it. Don't accept "No" for an answer from the customer service drones. Remember: you a warrior. Warriors don't give in to upselling.
In other news: my junk mail stopped after a few months of using the postage-paid envelopes to return application forms with "NO THANK YOU" scrawled in thick black marker across them.