How can I stop a payment from online to my debit card?

I have chase.


I bought an SAT test and the first 2 times i clicked submit, I put the wrong expiration date. the third time i put it correctly.


Its been a week and the 3rd transaction is completed but the first two are still "pending". How can i get rid of it an get my money back. obviously i paid triple for that one test. What should i do? Its going to take away $100 from my account.|||Pending means it's a hold. These are not actual charges and will drop off in a week.