Looks like this is an AFRICA problem. It seems most airlines in Africa are unprofessional in some way or the other. Most of the top management and staff who are African are very hostile (racist is more realistic) to other ethnicities (races).
It has become a situation where ''MY PEOPLE'' are above all else and must be promoted at all costs whether they are qualified or not. EX- MILITARY (Including Civilian) dictators roaming the airfields like God's gift to aviation (seems they were born with hours, ratings, and experience). EGOS that can be bruised so easily you are always walking on eggshells around them. Anything you say can be used against you. It seems to be some inferiority complex.
If you are not African (or even a certain tribe/religion), they don't want you there, Getting employment becomes difficult. If you are waiting for an upgrade you may be frustrated, you will have a harder time during training, SIM training records manipulated, etc. It is very cleverly done (and so easy in aviation training). Complain you will simply be branded with whatever BS they can throw at you.
Bribery for upgrading or getting employed is normal
Duty times and flying hours are not respected. You are eighter enticed with extra cash or threatened to be fired. Work with NO PAY, Lack of aircraft maintenance. The CAA authorities are corrupt.
The list goes on...
Unfortunately, our continent is special, and even those from first-world countries begin to behave with the same dishonesty if not worst.
We can only hope for change...