Pesky caller! Telemarketer?

Same thing as everyone else. No resolve. Want to know how to stop them before they steal anything. Can anyone help?

This company keeps calling me. So I made a fun and annoying game of pranking them and keeping them on the phone. My record is 6min.  I have unlimited minutes so this does not bother me much. I enjoy the idea of getting my own retribution by making the company pay for my calls and all my friends enjoy responses from the phone operators

call from a company called Vasacor check google for more info, they sell enhancement pills. 323-205-1096.
I think if you eat right you can save money.  Bad English, not in country, want to ship free supply with your billing info to play for shipping, they will tell you one time only special.  Typical marketing strategy.

to john and others, the easiest and best way to keep from being harrassed by these phone calls is very simple - don't answer - it works every time and it's very inexpensive.  why bother with phone blockers, no call list, special phones, etc.