Constant phoning

I recently took out pet cover with dotsure and I was very happy with the service I received. At the end of the call she asked me if someone could contact me about home insurance. I said I am not interested, but she sat that her colleague will still phone me. This was 4 weeks ago. I gave not once answered the phone. They phone me 5-6times a day. I am really annoyed with Dotsure. I have blocked the number which is not ideal seeing that I gave cover with them. But if there is an issue with my cover they can nail me? Why if I give the pinky must they grab the whole hand???