Calls from Reliance, Nippon India

Lately I am getting lot of calls from so called Reliance & today I got one from Nippon India Insurance policy department. They claim that I took a policy in 2017 (Reliance) and 2013 (Nippon India), paid a onetime premium and did not pay anything further. I just disconnect the call saying that I never paid and took such insurance policy. What's strange is that both the company callers asked the same questions and had a same story. Did anyone else get such calls? Is this a new scam? What is their end goal?