I think Snapdeal is the only company where someone can reach to their customer service agents in just few seconds. I recently got a wow experience with Snapdeal App, I ordered shoes from their app and after 3 days I wanted to change my delivery address as was moving to a different place.
I went to see in the app to lookout for anyoption but, I saw the whatsapp icon and bingo, I clicked on it and within few seconds the agent of snapdeal reverted and helped me instantly.
Great