Though as a tool surveymonkey deserves a 5/5 (well done designers!), it's policy on refunds is:
a. Devaluating for the product b. Provides a negative customer experience and c. I can assume it is illegal to be charged for services you have requested not to receive and have made no use of.
So surveymonkey management please get your act together we love your tool we hate your policies.
Just a refund when one cancels auto repeat subsciptions would do.
People would then reccomend you as a leggit company and you'd get your 5 stars vs such bad publicity you receive.
And yes your service is worth keeping, it's valuable and has lots of applications (that you have further expanded over the years and well done for that), just don't let it go down due to customer inconsiderate policies.