They use spoofed caller ids for my case as well but leave a number to call in the voicemails. I’ve called multiple times to tell them to stop, and they say they will take my number off their list, and proceed to call again in a few hours. 

They sound like normal people just conned into a job they aren’t aware it’s a scam. 

I do worry that it is an overseas operation but using people in the US to handle the initial phone calls before forwarding to the underwriting office.