After watching someone wall hack, become invisible, and pester the heck out players on a server recently (by using both), I see what you mean. Report them and then link support to the server you were on, as well as the gamer tag of the individual. Then as others have said, you won't know the outcome. If you can record the hack at the time, and can link that to Imgur or the like, and then link that in your report too, it will help for someone to see it. All you can do is bring down one hacker or hack at a time, as the hacks change constantly and need time to be caught and dealt with by a company. At least EA/Battlefield does try to do something about it, unlike other gaming companies/games. It's a shame some get their joys this way but there is nothing the community here can do about it.