Have you come across the unfortunate GTA ban screen lately?
One of the hot topics in GTA Online these days is that of false positive bans, wherein innocent players somehow trip the new anti-cheat system built into the game.
For starters, it's important to point out that in spite of this article, you shouldn't be too scared of this happening to you. False positive bans are extremely rare, with the vast majority of these claims being BS said by hackers and modders trying to cover their tracks. There is no need to play in fear, or stay away from the game because of this since there's only a small risk.
That said, the risk is still there. Sometimes, the anti-cheat can get a little trigger happy, and the hammer drops on the wrong person, and they get the dreaded GTA Online ban screen. Sure, in most games, this wouldn't be an issue, as the victim would simply contact customer support and have the problem squared away.

In the case of GTA Online, however, getting banned isn't that easy to escape. In fact, it's downright impossible.
A recent change in the ban policy of the game has introduced a new clause which prevents the appealing of bans. All punishments are final, regardless of circumstance. Trying to contact support because of a ban, be it false or no, will simply get you an auto-response and nothing more.
The nature of the bans is also pretty darn strict. Instead of simply being prevented from playing the game's Online portion for a few days, access is restricted for longer periods of time and all of your progress is wiped. No matter how much you played, how high your rank was and how many rides you bought, upon the ban being lifted, you're back to rank 1, arriving as LSIA. The only thing untouched would be Shark Card cash since you bought that with real money.