Beware of Okan University in Turkey. This university is highly dubious in their dealings. They collected thousands of United States Dollars from many Nigerian students. When these students were not given visa to Turkey, Okan University refused to refund their money. No place in the world where this is done.
When you apply Okan University, they may issue you admission within two days. After the admission, they will tell you to send $1000 to the school. When this is done, you are neglected when it comes to the issue of visa. Many people are regretting even dealing with Okan University now.