Show pagesourceOld revisionsBacklinksBack to top Send via e-MailPrintPermalink × Table of Contents How Do I's Why's Discussion Online Credit Card Processing with Control How Do I's control_-_how_do_i_..._post_a_payment control_-_how_do_i_..._void_a_payment how_do_i_..._refund_a_payment how_do_i....handle_a_nsf_check how_do_i_..._refund_or_void_a_processed_credit_card_payment_that_fails_to_refund Why's why_..._is_there_no_overpayment_field_when_applying_a_payment_in_control Online Credit Card Processing with Control Online Credit Card Processing Options How Do I contact Capital Q to Signup for Credit Card Processing How To - Setup Control for Credit Card Processing Specifications for USB Magnetic Card Swipes You could leave a comment if you were logged in.