during the redemption period, within 7 days from the beginning of each calendar month, T will pay merchant the remittance amount based on the number of valid redeemed certificate as recorded in the "merchant extranet" system during the previous calendar month. within thirty days of the redemption end date. T. will pay merchant the final payment (the "final payment") which is equal to the total revenue generated from the redeemed certificates, less the transaction handling fee, less refunded certificate, multiplied by the commission payout. less all monthly payments and anya other payment made to merchant by T. in accordance with the merchant agreement . The number of redeem voucher as recorded in the merchant extranet will be used for all payment computation purpose. Any dispute must be made by the merchant within 14 days of receiving any payment notice, supported by copies of the redeemed certificates. Any dispute to the number of redeemed voucher made after 30 days from the date of final payment will be excluded and the final payment made to the merchant will be considered final