I have received several calls from this number and shows as Diversified Tel on my caller ID.  I have blocked the number and called it back after blocking my caller ID info to the number.  This is an Arizona number and the person answering claimed to not have called into my area although I only stated the state I am in.  He told me not giving him my number was unfair as I was able to cite his.  Told him he is making the calls or his number is being spoofed and I will call him back every time I get a call from his number.