That seems really good advice. Next time I try to cancel my NYT subscription, I'll try that. I managed to do it entirely by email, but took 3 emails back and forth. Then in all the excitement of the 2020 US presidential election I subscribed again ... so the cycle will repeat.
P.S. there probably going to get a lot of people "going to prison" in the future so the scripts will include questions to out the fakers, who want to cancel without trouble.