He's playing safe. He wants to wrap this up in one shot, unlike you. First, you ask for the extra ram back without proposing a compensation for sending the wrong ram in the first place. Might have been a mistake of yours to copy the specs from the wrong page, but it is YOUR mistake, and not rkwan for he just read what you wrote in the first place.

Now, u want him to settle the retail part without resolving the police report. How can someone, especially a 'kid' as you emphasised earlier, possibly rest easily with a police report hovering above his head. Seriously, can u think from other people's perspective for a moment? U are very lucky rkwan did not lodge a counter-report, honestly. It was your mistake to mail extra ram, and your mistake to state the incorrect specs. Two mistakes that started this issue, both made by ur side. Instead, u blame rkwan for everything that happened soon after.

I suggest u to settle the police report n the sales part in the police station itself. Let them be witness. A call isn't enough, you need witnesses.