Roblox ban yes. Players are given warnings on the first few offenses. Repeating offenders get their account deleted. Another type of ban is poison ban in this the account of roblox user gets deleted and any creation of a new account is also disabled.
On july 4 2018 thousands of accounts on roblox were banned for unauthorized chargesdisputed charges after unintentionally or intentionally receiving a double refund for uploading audio that was rejected. Roblox is just trying to protect against some of the games theyve had to ban lately.