Your issue isn't clear for me. Had you requested for a 6 months self exclusion period? Or it has been applied automatically after 24 hour cooldown? Whatever the situation is, BCgame team won't change the self exclusion duration which has been applied on your account.
OP, if you want to, though, I think I can help you get permanently self-excluded?
You can also help the OP's in this type of cases. Tell them to reach
GambleAware,
QuitGamble to get rid of their rage gambling.