Telemarketer calling to lower my interest rates. I asked to have my number removed and the guy kept ignoring me. I raised my voice and repeated "remove my number from your list!!!" He then said "F^*k you b^tch! F^*k you b^tch!" And hung up on me. Wow!!! Although, the number was a PA number, the caller sounded like he was calling from a center in India.
Set your phone up to block calls from any number reported as a scam by others... I have an iPhone 5s - you can Google for instructions on how to block individual phone numbers for your phone. For mine, I just press the little "i" next to the number in the recent calls list, scroll down and press "block this caller".