Bollywood megastar Amitabh Bachchan says he is still awaiting an acknowledgement for an SMS that he sent to Shah Rukh Khan on his birthday over a week ago.

"Nov 2 was Shah Rukh's birthday and I may have been the very early wisher to him, but he still has not acknowledged, " Bachchan posted on his blog.

" (His) mobile must have crashed with the number of wishes he had continued to receive throughout the day. Maybe I should send him a reminder. (It is) most unlike him. I wished Gauri and him for their anniversary a few days back and they responded. But why not now?"

The actors have featured together in films like "Bhootnath", "Kabhi Khushi Kabhie Gham", "Kabhi Alvida Naa Kehna" and "Mohabbatein".

Earlier, cricketer M.S. Dhoni had ignored Amitabh's congratulatory message when he was awarded the Padma Shri, India's fourth highest civilian award.