No response from SABC

I have been corresponding with a few people via e-mail, with regard to a refund due to me. E-mail tracking shows that my e-mails are being received and read by them, but they don't answer. How is it possible that a public service corporation can get away with giving absolutely no service to its customers? As I browse through the many complaints on HelloPeter, it's clear that I'm not the only one with a problem. This is really disgraceful, and I want to engage with top management to resolve this.