So what u do Is go into a private match and switch the gamemode to grind. Press a then b then go up with ur right analog stick then down . then repeat 3 times. after that put time limit on unlimited . Stay on the gameplay options menu. Press a 5 times then b 3 times. Then u should be put into an online lobby full of bots. Every kill is one prestige. U leave the game once u hit the max level and repeat the process from the beginning to hit the next prestige this is the easiest way and u wont get banned. If it doesn't work msg my gamertag: PokeySauce48502 or if I'm not on the time text me at 308-240-9900 and ill let u know when I'm getting on