It's probably not a massively mental operation to be able to work out which company employs the OP. One hopes that he and his colleagues were not on ID tickets. Whilst all passengers are entitled to the same quality of treatment, if someone at SAA does the maths then any ticket price concessions and privileges might be rapidly withdrawn as a reprisal.
Would anyone at SAA read these pages? Well yes, certainly a pilot might. Who knows, but one needs sometimes to be careful about the dog and the hand. Of course, all punters might have been travelling as fully paid up F ticket holders in which case -- one can disregard this letter.