Game Bans start at 72 hours, move to 1 week for a second offense, 1 month for a third offense and continue. Toxic language, like curse words, will result in a Chat Ban. Chat Bans allow you to play Rocket League online, but you cannot use chat during a match. Quick Chat still works but is limited.
You'll be able to quit a Casual match once per day without receiving a Matchmaking Ban. Leaving another match within the next 12 hours will result in a 5-minute ban.