Bachchan, 72, said his campaign for the new channel was "pro bono" and happened many days ago.
"I wish to state that I have not entered into any contract with Doordarshan, on the endorsement of their Channel DD Kisan, and neither have I received any money from them. I worked with the advertising agency Lowe Lintas on the campaign for DD Kisan, and have not entered into any contract with them either, nor have I received any money from Lintas, as being stated," he said in a statement. [Bollywood superstar Amitabh Bachchan to promote newly launched DD Kisan]
"My 'deliverables' on this campaign have been executed by me many days ago. I work pro bono on various issues and DD Kisan Channel is one of them."
There were reports that Bachchan was roped in for Rs 6.31 crore in the most expensive endorsement deal ever by an actor.