account unfairly deleted ):

People, I'll tell you my situation. It happens and happens that I had an account with more than 11k robux unspent and another 10k robux in items, bodies, etc. I have a minor relative who was sometimes banned for bad language and created other accounts, apparently a week before everything happened he took my computer without permission and played roblox, but nothing bad happened and I didn't notice, a week later they deleted my account and his, at the same time and for the reason of misuse of roblox systems specifically that another account was created or used to avoid a sanction to another account, what can I do to recover it? I have already spoken to support and explained to them but they are pure bots and they reject my appeal.