The Big B says that he stopped endorsing Maggie two years ago.

Actor Amitabh Bachchan, who finds himself in the eye of the storm around Maggi noodles, said on June 3 that he had not received a legal notice so far and that he stopped endorsing the brand two years ago.

http://movies.ndtv.com/bollywood/amitabh-bachchan-stopped-endorsing-maggi-two-years-ago-havent-received-a-notice-768394