Repeated phone calls from rude and harsh debt collector who do not state the specific reason of the debt and demand address and other personal information. The person also said in a threatening tone " well I have your address '' The collector spoke to me in a rude/scolding manor as if I was a child. Even after politely expressing that the collector was rude she continued to be condesending and rude interupting me every time I tried to speak. 
The collector also would not release any information about their agency.