how can i do?

hello sythe, how could I do if my older brother started buying and selling runescape currency and other games but we live in the same house and I told him that I had an account already created, this account I never used or anything but it would not cause problems? at the time of creating an account in sythe?

 

this thread sums it up best, Multiple sythe accounts

 

me brother try to make a new account but said already exist 1 account in this ip obviusly my account... and he cant create... how can i delete this account? for he can make one account?