Mango airlines???

We were suppose to fly from CPT-JHB on Sunday @ 17:00. Received a SMS stating flight was delayed new time 19:00. Received another SMS stating flight was delayed again new time 21:00. Received another SMS stating flight delayed new time 23:00. What an inconvenience. Mango just does not worry about your arrangements or your time!!! They definitely are not accommodating to their clients. Mango is very fog about the reason for the delays??