That's a bit harsh to call for jailing the victims. This is a ymax corporation number (magicJack), a Voice over IP phone and preferred method of communication for IRS scammers. 202 241xxxx numbers are particularly notorious and the voicemail belonging to this number uses the impersonation of a federal officer (something you can be jailed for). It is almost certainly not used for spoofing but a real life scammer at the other end. The thing to do is, though: don't call back constantly but report it to
[email protected]. The company does follow up and will eventually shut this number down if they establish it as being used against their published TOS......leading to less harassment for all involved.