@still-observer = ripp-off bot

In my quest to understand the mechanics and handling of the voting bots I had the great success to instantly hit a bot ripping me off.
In my defense I gave @still-observer enough time to react and described everything to great length, so a "technical failure" on his side is very unlikely, an intentional scam obvious.
You can read the whole story here:
https://steemit.com/steemit/@solarwarrior/technical-troubles-or-ripp-off-with-still-observer-voting-bot

So what could be the reasoning and idea behind this scheme?
My possible explanation:
1.) He advertises his "services" by the typical 0.001 steem transaction spam with bold claims about possible voting strength
2.) If someone buys into his scam he checks if this post has already been promoted. If not he sends the steem back claiming that it did not make the quality check. (Happend to me before)
3.) If the post has already been promoted he does - NOTHING - trusting that nobody will be able to differentiate which bot voted for what and when.
4.) If someone asks what is going on he claims that he actually did promote your post but that he does not guarantee anything... in my case apparently not even a single vote worth a fraction of a cent...

Being scammed in the steemit community this way and so obviously, that is for me not such an easy thing to get over with.
Searching for @still-observer here on steemit reveals that there are other people also claiming to have been ripped off by him.
As these kind of transactions on the blockchains only work by trust per se and also trust that every transaction can be checked by looking at the blockchain it is definitely an issue for the steemit community and the whole principle of blockchains and attached communities if someone can just get away with something like this.

And that's why I will look into ways to hold him accountable for his actions.