This email is in reference to the order placed by your side on date __/__/____ (date) for _________ (product name). We would like to inform you that we have successfully received your payment of _______ (amount) but by mistake due to ____________ (technical error/miscommunication/any other) you have been charged with _________ (amount) in lieu of _________ (actual amount) for the same product mentioned above.
Therefore, we deeply apologise for the same and we will ________ (refund the extra amount – if applicable) paid by you as soon as possible. If you need further assistance, please do not hesitate to contact us at ____________ (contact details).
___________ (Contact details)