India's largest mobile service provider Bharti Airtel has earned the dubious distinction of being the company facing the largest number of consumer complaints, according to latest government data.

As per the latest data available with the National Consumer Helpline (NCH), as many as 2001 complaint calls were received against Bharti Airtel between March 2010 and February 2011.

This was highest number of complaints against a single company, followed by state-owned telecom major BSNL (1986 complaints), PSU giant Indian Oil (1940), Anil Ambani-led telecom firm Reliance Communications (1792) and Nokia India (1616).