Samsung S21 5G No R1000 Voucher received as promised

Samsung S21 5G No R1000 Voucher. In the advert they promised a R1000 Voucher. Buying decision was made on that. After buying phone they said they will email it, that was wierd. When asked how long they said 7 days. After 7 days notning. Made numerous calls, logged multiple complaints with their call Centre 2 weeks later STILL NOTHING. INCREDIBLE *******, NO CUSTOMER WANTS TO FIGHT FOR WHAT THEY WERE PROMISED AND WHAT THEY MADE THEIR BUYING DECISION ON I COULD HAVE BOUGHT IT SOME WHERE ELSE THEN