I beg to disagree with both britexpat and Mufti Shahid in that native speakers are not just "preferred" here, they are the only ones "wanted" even if they do not know their own language or the rules of grammar. Non-native speakers are "shunned" (and I have used the word "shunned" correctly) even if their knowledge of the English language surpasses that of native speakers.
That is the irony out here!