need help on accounts.

over the years, i have made a few accounts for wagerline/covers. . only because i always forget my password due to inactivity and such therefore i just open a new one.  I did not do this to have a higher percentage of winning the pools as i am always using one account.  i know the rules indicate that you must only have one account. i do not want to end up winning, and be denied of my prize due to multiple accounts.  Is there a way where i can delete the accounts i dont use? can some1 please advise me.
Much appreciated. 

thanks tuppy..