I have been getting these calls for months. It started out as a car warranty purchase, and now it has evolved to the number disconnecting after approximately 3 seconds after picking up. This number is calling my cell phone. I placed my number on the do not call list, and I just put this number on my block list. I have verizon and anyone can block calls, FYI--just call customer support.
This number called my business. When they realized we are a business, they said "I have the wrong number" and hung up. On my caller ID, all that registered was the word "California".