We recently had a public event and a non member registered and paid to attend. They wanted their money back since they could not attend. Our policy is no refunds and clearly states this on our event. Well they decided to claim fraud with their credit card company. Which was not true since they were mad they could not get their money back. Would like to be able to block them from registering for any events. Seems simple to block emails, why can't WA have this function?