If he doesn't know what to do, then he isn't reading the threads,
That's basically the case for 98% of the forum members.
I hope he will see this thread, and modify his behaviour in the future. Merit is something you earn, and not a commodity.
If the user in question, didn't bother to read about merits (prior to contacting you), then I highly doubt that he/she is going to change that behavior (especially since you put him/her on ignore). I suggest to point that user to the right direction and hope for the best.