I purchased 3 tickets to Oppenheimer through Fandango and then remembered I had a doctor's appointment at that time. I went to the theater and got a refund instantly for their portion of the tickets. I was still out the Fandango "convenience fee" so I called their 800 number to get a refund. No dice. So then I called my credit card company and obtained an instant refund on the disputed convenience fee. I will never use Fandango again.