No feedback after wrong address was used for delivery

An address change was requested, and after payment has been made, I got notified that the licence was going to be delivered to an old address in Pretoria. We have been living in CPT for 4 years now. They said they were going to change the address with the courier, but the courier ended up delivering it to the old address. Not sure if the licence was received by someone or not. I followed up with them, requesting a refund, as I ended up having to sort it out myself here in CPT due to my licence being expired already, and I couldn't wait any longer. Still no feedback.