Unsolicited calls and rude staff

I've received multiple missed called from you guys so I decided to answer to ask you to stop calling. The Agent was very rude and did not listen to my request. I also told her that I opted for the National dnc database but you guys are still calling. When I asked her where she was calling from, she hung up. I would like the matter investigated. You complaint number on your website does not work either. I would like for you to delete my information but first tell me how you got my information because the lady said the dealership which is incorrect because I dont have any vehicles under my name.