Approach to clients

Arriving at the airport 1 hour and 15 minutes prior to my flight FROM ELS 2 JHB, boarding pass in hand. A lady blocks me at security and says they are not open yet and moves me back to close the security door and then proceeds to have a fun discussion with a work colleague and then decided to open the gate, 5 minutes later at 08:10. <br> What time is the airport security suppose to be at the airport to open the doors to customers?<br> Are staff suppose to come in drips and drabs? Make one think if they take there job seriously and now I question the quality and integrity of the safety of customers.