Unless you have clicked the final button to confirm your payment, then the transaction will not have been completed and your credit card will not have been debited. It's the nature of the internet that dropouts occur and unfortunately these are outside the control of either Rental Pages or PayPal. However, nothing has been lost, apart from a little time, and we can only suggest you try again. If you are at all worried about being charged twice, please feel free to check your PayPal account profile by logging into your PayPal account.