Doh!!
"A short time later, he received a call from a blocked number and was told the caller worked for a firm called Ledger that dealt with his Bitcoin account and the account had been hacked. The caller requested the victim's passcode and anonymous account identification numbers, and the victim provided the information to the caller."
Daly City man scammed out of $27,000 in Bitcoin
https://www.ktvu.com/news/daly-city-man-scammed-out-of-27000-in-bitcoin
Another article:
https://decrypt.co/55137/man-loses-27000-in-bitcoin-to-sim-swap-scam