The actor thanked Abdul Basit, Pakistan High Commisioner in New Delhi on Twitter for offering him the visa.
"Thank you Mr. @abasitpak1 (Abdul Basit) for your call and offering me (a) visa to visit Karachi. I appreciate it. Unfortunately, I've given away those dates now," Anupam tweeted on Thursday morning.
The actor was to attend the three-day Karachi Literature Festival which begins on Friday. However, while 17 out of the 18 Indians who were due to go for the event, received their visas, the 60-year-old said he was "singled out".
However, a diplomat from the Pakistan High Commission told IANS that the actor had not submitted any visa application for his visit. That, Anupam, described as a "laughable explanation" and wondered if it is his outspoken views on various social and political issues that led to the visa denial.