Chiri, if you look up "Hach?" on Google you'll find the name in several genealogical sites for Acadians (French-Canadians) with that surname. In the French genealogy database/search site below, Hach? has plenty of matches in Normandy,France and eastern Canada.
http://www.geneanet.org
Perhaps the dominican Hach?s are descendants of French settlers in the Middle East. I don't know. Khalil Hach? Malk?m is petromacorisano and both his parents were indeed Arabs. I am not sure that he is directly related to the ones from Santiago. He was personally employed by Trujillo to take care of his haciendas and horse stables. Became a polo player and self styled bon-vivant along with Ramfis Trujillo. He was not into politics, but as someone else mentione here, he was closely linked to the Trujillos local business empire.
BTW, speaking of Indian food above, and polo here; Jabar Singh was a sikh prince imported from India by Trujillo to be a polo teacher in the DR.
Mr. Singh was a splendid gentleman, married a Dominican lady, retired in La Romana, and their children are Indian-Dominican. Jabar Jr. is an excellent golfer and top golf person at one of the courses near Juan Dolio (Guavaberry?).
- Tordok