Poor service..........

Poor service. I've been following up for more than a month now regarding a voucher that Discovery says I've purchased and redeemed but yet they can't show me proof. I tried to purchase one of those Wednesday vouchers but the system wouldn't allow me. I then sent a screenshot to the Whatsapp chat and was told that the issue would be escalated. I have still not heard anything. I've followed up countless time, a manager was supposed to contact me and still nothing. All I want is to be able to purchase the voucher, it's not a big deal!?

Reference numbers: *** ***