Pathetic Vodacom Service!

I did an online upgrade on 10 December 2019 and received my phone on 20 December 2019, I have been trying since then to redeem the R250 accessory voucher as promised to me on completion of upgrade with no luck. I called customer care, they couldn't help, transferred me to online division, they then transferred me to after sales division, only to be transferred back to online. There I was told to visit the website to redeem the voucher, there is option on the website! I called them again and was told to email ***, I got no reply. Two days later I called again and was given another email address ***, the email has been decommissioned since 8 December 2019, I was redirected to ***, I received a ticket Reference on 23 December 2019. On the 27th I called again, was told to email the ticket Reference for feedback, only to receive another ticket Reference!