HDFC Ergo General Insurance — Rude in call

Recently i visited Hdfc ergo website to check the details to purchase a policy, For some reasons i cannt go further to choose or buy for now.

i am continuously getting call from customer care for two days, to one person i requested to mark not interested.

He spoke very rude and asking why for time pass you visiting website such kind of questions.

If i visited website i must buy policy?
Why they are giving advertisement and popup in social medias?
Why customer care convincing to buy policy?

HDFC ERGO, Please teach basic how to speak with customers to your employees who are interacting with customers.