Miway harasment

I was harassed costantly last year by this so-called professional insurance company. I requested numerous times that my number be removed from their database. After a nasty encounter wth one of their agents, I complained and received a call where I was assured they won't call again. That is nonsense, the calls have started again, up to 4 a day. I wish I knew where to lay a formal complaint. Miway does not stick to their one code of conduct, disgusting work ethic!