We wrote of the prejudice and mistreatment of Africans by Turkish airlines.
I wrote at that time to the senior directors to complain. I recently travelled again on Turkish Airlines (the only flight available at the time). I am pleased to state that the treatment of Africans was punctilious and fair. I could not see any difference in treatment of African travellers from non-African.
I thought my communications had been ignored as no acknowledgement was received. But better than an acknowledgement is doing something about it. Well done!