I've been recently looking around for a vehicle insurance and I filled up a form to get some offers and compare prices between some companies, but now one of them keeps callin me every hour.

I could just block the number and that would be the end of it, but I'm curious to see how many times they are going to call me without response until they tire out.

Now this question comes up to my mind, is it legal to do this kind of "marketing strategy" this many times? I mean, I'm not a lawer but isn't there any point that is considered a hounding offense?