This happen to me before but fortunately he didn't know where I lived.
Met the guy in the club was real cool and exchanged numbers. We started talking on the phone and he told me he was an ex-con and was a Crip. The conversation went left and I was disinterested and told him, it was nice meeting him but I'm not looking for a relationship and left it at that.
Dude kept calling me I ignored his calls. Called more than 10 times, texting me and I just ignored it until I got pissed and answered and told him I'm not interested. He cussed me out over the phone called me bytch and told me his set and how he was gon kill me. He left me a voicemail rapping about how I'm a bytch, slut, the whole 9 and how he was going to put a nine to my forehead.
Long story short I changed my number and it ended. Only thing that saved me is that he never knew where I lived.