Hippo Harasses You When Your Just Looking Around

So I went to Hippo's site to get a ball park figure for insurance on a new car I'm planning to buy, and I regret every second since...

After seeing all the prices I closed the site since the rest was of no use to me since I don't have the car yet, since yesterday I received around 8 or 9 calls, and couple of voice messages. They tried calling me when I was in a meeting, I rejected the call and they continuously called me, the second I reject it, one after the other, no break in between, I blocked the number and just got a bunch of notifications that they have called me.

I DO NOT WANT TO SPEAK TO THEM, but they do not seem to notice that or even care, this is serious harassment, I did not request any calls, is it really necessary for them to Spam you like this?