Unsolicited Contact

I recently went on to King Price's website, to get a comparative insurance quotation.<br> I filled in my personal details in good faith, as it is apparently required for me to get a quotation, but I did not opt in to any kind of marketing or request a call back, in fact I actively avoided the call back option, as I was browsing and did not want to deal with any sales consultants etc... But not a minute after I left the site, I got a call back from the King Price call centre, asking me if I want a more comprehensive quotation...<br> <br> This, I feel, is totally out of line, and unsolicited... I urge King Price to fix this, as it is really off putting, especially since I did not ask to be called back...