They are extremely persistent and claiming to be the IRS and threatening to throw you in jail and all kinds of things,” the 76-year-old Torrance resident said. “They try to make it sound official.” In the past month, the IRS and several South Bay police agencies have issued public warnings about the IRS scam and similar cons perpetrated by thieves on the telephone. “You are never going to get a call from the IRS demanding an immediate tax payment,” IRS spokesman Raphael Tulino said. “A lot of folks will hear it’s the IRS and act out of panic or dismay,...