You said you don't have the charts so I asked the question.
So when Joe Bloggs VFR bug smasher says he is 5 miles east of the town of Boganville, overhead the Boganville dam wall and didn't give a reference to the airfield as it's actually 9 miles from the dam, do your IFR charts show where the town is?
Do you just ignore his call, ask him for more info or look on a more detailed map? Just wondering for my own interest.
If Joe Bloggs wasn't taught IFR waypoints, radials and IFR approaches, that's not his fault, it's a fault of the system... a system which you also need to work in.