Crime & Punishment. Why have GM's that are unable or unwilling to suspend accounts?

[HyoMinPark]

If you put it that way, I think i'll agree with you that it could have been a good thing that I got out of the group. They were performing poorly anyway.
About the chat log, there is always a server side chat log available, that's why they ask for timestamps and they can even check actions.
However, the reason I posted this in general, despite my issue today, is to raise awareness or have a general talk of how GMs often cannot or do not want to suspend accounts. (abuse, harassment, teleporting)

I agree that there are issues of the GMs dismissing rampant cheating, especially when it comes to things like botting (PvP is a nightmare, and I am aware of a few crafting/gathering bots on my server that have been reported multiple times, and nothing has been done about them because they’re still there botting away all day). I agree that there are also a lot of issues with the kinds of evidence GMs will accept when reporting players (e.g., it has to all be in-game; they won’t accept video evidence of botting players, etc.).

It could very well be that there was FC chat evidence (or LS chat evidence) of the three planning to kick you to bring in a friend, or what have you. And the GMs will see that, when they go back and investigate. They just cannot tell you of any action, and trust me, it sucks thinking the harassers or cheaters got off scot-free. But all it takes is more reports of similar actions, and the GMs will move from warnings to suspensions to banning. There’s just no outward way of knowing, unless you track their Lodestones and notice: “It...doesn’t seem like they’ve logged in in about a month”, or they come out and say they were banned on some form of social media.

Personally, I go back and forth on the hush-hush way GMs won’t tell you if they took action or not. I understand why they do it, but I also understand how crappy it feels to think your complaints fall on deaf ears.

I just try not to waste too much time on people like the three you met. They put me in a foul mood, and I’d rather not let them ruin the time I get to play. It’s hard sometimes, but if you can do it, it makes things so much easier.

[Penthea]

Giving feedback is the only way Square Enix knows what it's doing wrong and unless you speak up things will not change for the better.

While I agree with this, if this exact thing happened in WoW you would have had literally the same result. Even though Blizzard has a much larger and more efficient support team.

Simply put, your issue is very minor and without hard evidence that it happened as a result of harassment, no GM in any game can do anything about it.