We confirm / confirmed receipt of your payment.
Probably the first, but there is no way of telling without any context. Without context, it could also be 'will confirm' or 'haven't been able to confirm'.
Veteran Member114,959
SystemAdministrator: A system administrator takes care of the inner workings of the entire system. These users have the ability to promote, ban and modify other users.Teachers: Users in this role are certified teachers. This may include DELTA, CELTA, TESOL, TEFL qualified professionals. Email a scan of your qualification to an admin, if you wish to be considered.