ZANDO DOES NOT WANT TO CANCEL ORDER AND REFUND ME

I ORDERED A SHOE(ON 8/3/2018) A PUMA SPRT SLIP ON SHOE CAUSE I HAD A VOUCHER FOR R200 OF WHEN I CHECKED OUT THE VOUCER WAS NOT ACTIVATED BUT IT SAIF IT WILL BE ACTIVATED ONCE I CHECKOUT I CALLED THEM IMMEDIATLY AND SPOKE TO A QUANITA WILLIAMS AND A ANITA WILLIAMS TO NO AVAIL THEN NEXT DAY I GOT A MSG STATING THAT MY ORDER HAS BEEN SHIPPED AFTER I CALLED ON THE SAME DAY TO CANCEL THE ORDER AND ASKED FOR MY MONIES BACK I HAD TO DO A FOLLOW UP THE NEXT MORNING THIS IS NOT HOW I THOUGHT THEY WOULD TREAT LOYAL CUSTOMERS AT ALL