Dissatisfied with Khaya2khaya properties

I have rented a apartment through them, prior to move in the were visible maintenance attention that needed immediate action in August 2021, they told me the owner will come through and inspect and maintain the apartment that never happened now it’s 7 to 8 months later, paying rental with no default and no maintenance work done, no security door in the apartment in question and now the entrance door does not close and when trying to have a civil conversation with the agency I’m told I cannot call after 6 regardless of the people ignoring my WhatsApp messages and my calls during the day . My family’s security is at stake