Incorrect time on boarding pass and numerous flight time changes

My flight time was changed twice before flight day. The departure time was then 1h30 min later than originally advertised. The flight was then delayed by another 45 minutes on the day.

Worst of all was the incorrect time on the boarding pass from online check in, which resulted in me arriving too early.

These errors are very sloppy and unprofessional.

I will not fly Mango again