lol, if u got banned for malicious hacks for the third time, then they clearly have evidence on you...anyway, i'll be here waiting for the evidence of u 'hacking' to get sent just to send u this:
edit: due to it being your third time for being banned for malicious hacks, you are clearly doing something for the anti cheat to trigger which causes you to get banned
If you want to appeal a punishment you can do so by posting an appeal on the “appeal a punishment” section here on the forums using the correct format pinned to the top of that page. From there a moderator will review it and talk to the person who banned you and see if they think the evidence is sufficient or not and if you (or whoever was banned) should be unbanned or not. If it wasn’t you who got banned (sibling ect) they will need to post the appeal themselves using their own account.
Do note that since you have been banned a few times before you will most likely have to provide some sort of proof or arrange something to prove that you were (or whoever was banned) was indeed not hacking. If you were banned for autoclicking notifications this could be due to butterfly clicking (which can false set off the anticheat) but if it was for something else then there isn’t much I can tell you. There was obviously a reason for this to happen more then once, so probably best to get that sorted.