Caller identified himself as being from "Financial Services". He did not identify the company name even when pressed. Said "they" were offering a mortgage at 1.89%. I infomed him that I was on the "Do Not Call Registry" and that he should not be calling me. He responded "No you are not". I hung up.
A few minutes later, I received a call from the number of a Sydney CPA, claiming that he had received a missed call from my number.

I suspect that the original call was a scam call and the scamster spoofed my number in calling the next victim.