irstly, please note that this is a rare occurrence. But in case it happens, you'll receive an email which would confirm if your payment has been taken. We ensure that the refund process will start within 4 hours however it might take a week for the amount to get credited in your account depending on the time taken by the bank. Please feel free to call us in case of any further clarifications. Rest assured, we will chase it down and ensure that you get your money back.