If some one called my home on the telephone and said "I'm a US Marshal, send money to pay for a 20 year old debt." or something to that effect, I'd probably interrupt the caller to tell them to put me on their Do Not Call list and then immediately hang up the phone before they ever got the chance to explain half of it. I've received much more creative attempts than that to scam me out of money over the telephone, and I'm sure that I'm not alone in that respect. I get calls from scammers all of the time, and in related news the IRS has recently warned people that scammers are calling and using that exact same pattern but pretending to be collecting an IRS debt instead of student loans. Therefore there is zero chance that I would take a telephone call like that seriously since there is zero way to authenticate the caller. We don't know whether other the marshals tried anything other than the telephone to contact Aker, but I've seen no comment from them to indicate that is the case. Assuming they've only contacted him by telephone then the proposition is that we must all obey anyone who calls us on the phone and claims to be a government agent.