Bad service

Well again, bad service. I phoned for a quote, agent insisted I give my bank details. I said no, I only want a quote. She went on and on. That day received 5 calls from them, which I did not answer. After that I am receiving calls from numerous Insurance companies. This is now Bidvest Insurance, King Price, Old Mutual, ABSA Insure, Zestlife, Miway, just to name a few. So where did they get my number? Never in the past was I bothered by Insurance companies....only now, after an inquiry with Outsurance. I spam and block them all!