Yeah, i know these trolls are douchebags and they can be annoying, but they cannot be stopped by a flag, if a flag is created and supported by many, they will just continue with their spamming. They are making stupid accusations and nobody is taking them seriously, so we shouldn't too, they'll eventually get tired and go and spam somewhere else.
If we create a flag then most probably they will get banned from the forum. If not then what else we have as an option to stop these two? I have not gone in detail as, I am aware that it is impossible to stop such spam.