Flight delays and poor service when reporting

<p>We experianced a flight delay of more than 2 hours on a flight between Durban and Johannesburg last weekend. The reason given was that they did not have a pilot available. This was not the first time that Mango was not on time.</p> <p> </p> <p>We need to fly between Durban and Johannesburg again this weekend to catch an international flight but the first delay has already been communicated.</p> <p> </p> <p>When I phone Mango, all the departments answer their phones within a reasonable time. I then get transfered to the complaints department who does not answer their phone within 7min. A lady at travel desk said she would call me back but that did not happen either.</p> <p> </p> <p>How do I complain and what is my options not to mis my international flight due to the poor time management of Mango?</p>