https://support.runescape.com/hc/en-gb/articles/115002238729-Account-Bans
Took them an hour to respond lol You're receiving this email as you've recently appealed a ban on the account with the login name: After a comprehensive review of this account, there is no evidence to suggest the ban was applied in error and normally would not return this account to play.However we recognise that people change and as significant time has passed, in this extremely rare case we believe you may have learned from your previous mistakes so would like to offer you one, final opportunity to continue playing this account, on the understanding that you read, understand, and follow the RuneScape rules.