Windurst Mission 2-2 not recording kills correctly

Platform: Windows
ISP: Virgin Media
Type of Internet Connection: Fibre Optic
Internet Connection Speed: 20Mbps
Date & Time: Aug. 10 2015 00:51am BST
Frequency: Once (have not and will not try again)
Character Name: Tidis
Race: Hume M
World: Cerberus
Main Job: Paladin Lv.99
Support Job: Dancer
Area and Coordinates: Tahrongi Canyon
Party or Solo: Party with 2 members
NPC Name: Moreno-Toreno
Monster Name: N/A
Steps:

The mission requires 30 kills in Tahrongi Canyon, I killed 30 Moreno-Toreno claimed I killed 12 with 20 hours remaining.

I went back and killed 20, Moreno-Toreno claimed I had now killed 16 with 16 hours remaining.

I went back and killed another 20, Moreno-Toreno claimed I had now killed 23 with 9 hours remaining.

I went back and killed another 20, Moreno-Toreno claimed I had now killed 3 with 5 hours remaining.

At this point I stopped trying to do the mission.

Upon talking to the npc, he then took back the doll and told me I had killed 96 enemies which seems to be the accurate number but all the numbers recorded before then were incorrect.