Harrassed by Hippo

I filled out the required information on their website and got the quotes. I was not ready to commit so I exited the site without clicking on any insurance option. The following 16 hours I have been harrassed with phone calls. I was instructed to leave a meeting from my line manager and deal with whatever was so important because I was getting call after call, even though I rejected the calls. I have received 30 calls in the space of 16 hours including in the evening. I have now blocked the number but they keep calling, which I still get notifications about.