I just accidently made 2 transactions to a car insurance companny?

the payment website told me that there had been an error and the payment hadnt gone through i go thru the process again and make a payment and now my bank is 80 overdrawn there are 2 emails telling me i have sucessfully made a transaction both at 220 each not cheap even thou the 1st one said it hadnt been sucessful and my bank is shut until tomorrow morning help!!!! Can my bank stop the transaction can i stop it?