Who called from 4159378430

Received a call on my cell from on 2/13 from someone named John Anderson, could barely understand  him stating I needed to call or would send officers after me.  Same date called me at work 6 times. First time told me I had to call a Mark Anderson at the 415-937-8430 immediately, that I had court action today in California and needed to call him to represent me.  Tried to question him on who he represented and he said he could not tell me.  I called the BBB and they advised to check my credit report and suggested I call PD in that area.  Before I called call PD in California, he called again and said you did not call like I told you to. Told him I was not going to call, had called BBB and was getting ready to call police. A Detective called me back.  She tried calling and just kept getting busy signal. She called me back later and said they answered saying "hello"  and she identified herself and they hung up,.  This morning at 7:05 AM my time (4:05 AM their time) got a call on my cell, but did not leave a message.  So tired of this harassment.

This number keep calling they have personal info they should, not have how are they getting info this is not safe at all they are posing as legel,people saying something about going to,jail and they want you to put money on a walgreen card this is not cool

When they called me they had my dob and last 4 of SSN. His is really scary.

Meant to say in previous post that this is really scary.

just got a call from that same number and the guy said his name was John Smith ( could barely understand from the accent) looked online and found all of you.