Drain whole tomatoes reserving liquid. Set aside. Heat cooking oil on medium-high fire, add garlic and saut? for 2 minutes. Add onions and bell pepper and saut? until onions turn slightly brown on the outer edges, stirring constantly. Add whole tomatoes and saut? for another 3 minutes. Add reserved tomato liquid, tomato sauce, and 1 cup of water or shrimp liquid to pot. Add hot sauce (red pepper to taste will do) and salt. Stir well. Cover and lower fire to medium-low. Simmer for 30-35 minutes stirring occasionally. Add shrimp and remaining 1 cup water or liquid. Bring to a boil for 2 minutes. Recover and simmer for 10 minutes. Serve as a main dish over hot rice with a fresh green salad on the side.