Who called from 3209685603

They keep calling and do not leave a message.  The lady when I called back and said "Hi, this is Amy. How may I help you."

I recieved a call from this no. They ask for someone I never heard of and were vary rude to me when I told them I do not know the person they are asking for. They called a liar and then hung up. I called them back 20 mins later ... asked for a manager and they denied me.  I am pissed to get a call from them. I WILL GET TO BOTTOM OF THIS.!!!