Bajaj Finance — To stop promotional sms & call for mobile no. [protected]

Address:	Bhavnagar, Gujarat, 364001
Website:	www.bajajfinserv.in

I had been receiving SMS regularly from Bajaj Finance Ltd (Now Bajaj Finserv) stating that my loan is already completed. To my best of knowledge now I have no loans with BFL.
I had complained them many times and every time I get a ready-made reply stating that my complaints will be resolved in 48 hours. But nothing happened. The complaint form available in their website (www.bajafinserv.in) is useless and the Submit button never works.
Their Customer care number[protected] is not accessible. Wonder what is happening to this company...
Now, I request to please stop promotional sms & call from bajaj finance on my mobile no. [protected] with immediate effect