Green energy investment information

I received a call from a person with a Filipino accent this morning. He wanted to send me investment information on green energy investments. I told him off, telling him that he and his company were retarded. I told him that this was the sixth or seventh call and I had already made it clear that I was not interested and I didn't want their information.

I told him that this was a sales line and not for him to call, unless he wanted to make an order. He insisted on speaking to the managing director. He also said that he wanted my email to send information. At that point, I hung up.