Advance Vouchers

Hey this is Louis here. On the 4th of May I bought a voucher advanced R200 Cape Union Mart and also on the 4th of June I bought another R300 voucher advance for Cape Union Mart. i tried to use them online on their website and it says invalid voucher code. Also did call Cape Union Mart Online Shopping Helpdesk and was not used or redeemed on their site. it's still showing on My Vodacom app as not redeemed and still available but no matter what I try it's not letting the vouchers go through on Cape Union Mart website. So I would like to know what can I do now because I paid R500 for two vouchers that I cannot use so please assist. My cell phone number is ***. Your help would be much appreciated.

Been sending and trying this email and hours of calls to support desk Vodacom.

Have not been helped.