Platinum life call

I just received a call from someone from platinum life and I have never experienced such a rude woman. She answered the phone by demanding to speak to me not even asking for me by my full name. She then proceeded to ask if I knew someone who gave her my number and when I rep**** with No she rudely described the person. I then asked what this was about and for her name and she rep**** with I NEED TO KNOW IF YOU KNOW THE PERSON WHO GAVE US YOUR NUMBER. I calmly said no again and the she put the phone down in my ear...this was after 5 calls that I could not answer as I am a student and in lectures the whole day... Very very rude and disrespectful!