How can we cancel our subscription?

how do I take my credit card off file, I do not want to be charged for this service any longer?

All that needs to be done to cancel the subscription is to set your account back to a Free account.  Here is how to do so:

https://www.jotform.com/help/341-How-to-Downgrade-Subscription-Back-to-Free-Account

That will cancel automatic renewal of your subscription.