A lot of times the victims give these type of information to the scammer. Not saying this is what happened to your parents, but my aunt got a call where a young man was crying and SHE was the one that asked for my name. From there it was quick for the scammer to say "yeah, I am here with so-and-so". Thankfully she got stopped outside the bank branch by a police officer who saw her panicking and was able to talk her out of it.