. . . "4.1) The Bank shall debit to the Card Account all Charges and Liabilities and any other costs or expenses incurred or payable by the cardmember under these terms and conditions and the Cardmember shall be liable to pay to the Bank all such amounts regardless of whether a sales voucher, a Cash Advance voucher or any other voucher in respect of any Card transaction is signed by the Cardmember or the" . .