I visited Durban and Commercial Road is dangerous. I got robbed there. I will never ever visit Durban again. The police are useless.
It all happens in Morningside, Florida Road Area. The city needs to be treated like any other big city -- be streetwise. Do not walk around the Point Road Ushaka Marine Area. The beachfront is safe to walk around, but do not leave valuables unattended on the beach. After hours, the city runs dry and the night owls head for Florida Road -- restaurants, coffee shops, clubs, and bars. A must is the Botanical Gardens (it's free).
When we went to Sea World we were followed most of the way there. It was very scary and we had to run most of the way. Not fun, but then again Sea World was great!
Be careful in the SeaWorld area. Take a taxi or bus directly to and from there as the area around it is very dangerous.