SEVERELY delayed flights

During investigation of our SEVERELY delayed SA Express flight SA1822 from PE to CT on 1 Nov 2017, we found that not only our flight but also earlier flights and according to airport staff and co-passengers previous days and even weeks were SEVERELY delayed.

The next day I was informed from a colleague ofa similar experience between George and CT.

This appears to be a regular occurrence with no recourse or remedial action from SA Express management. How on earth is an airline allowed to continue operations with such a performance history?