Redeemed points in December 2019, 3 emails sent and still no voucher received

In December 2019 I redeemed R100 for a Woolworth voucher, I've still not received the voucher. I've emailed them 3 times and the only response I get is " Dear , A request for support has been created on your behalf. For tracking purposes, your ticket number for the below query is #870455". The other response "A request for support has been created on your behalf. For tracking purposes, your ticket number for the below query is #269332". They have still not responded to my third email. No phone numbers to even contact them.