I know that some people call people trolls or report them when these "trolls" have played less than 20 matches and probably still just don't know what to do. Some almost never respond in chat or voice chat or even know english.
The last actual troll that tried ruining somebody else's gaming experience that I have experienced in this game, on my ship or ally captain slot, was, I think, close to a year ago or more. He was responding to me, brought the right ammo even and randomly decided to have his own fun. Well, I did have a mine launcher, but that didn't mean he had to destroy it all the time with lochnagar... he eventually stopped destroying the gun, probably because he didn't want to rebuild it anymore.
Another troll ages ago was apparantly somebody that was sabotaging a certain wanted guy so that his own wanted guy has an easier time winning, that was somewhere around last summer.
Then there was this one butthurt guy that just stayed on the ship, because he was literally just butthurt. Didn't do anything but blocking the front gun by sitting on it and writing in chat how butthurt he was.
For pretty much everybody else a simple block and report is literally all it takes. The more insulting or harrasing some people are the higher the chance they will quit playing the game within a month, top. I didn't even have to block anybody after almost 4000 matches and don't see the same mindlessly annoying screamer twice. Or at least, I don't hear them trying to be as verbally annoying as they can again.