ok....no.1: tell your brother to get a bank account or phone the dole office and get it cancelled from your account. he can get his money sent to his address in the form of a cheque he cashes at the post office.
no.2: while not running round after him re: dole money, also refuse to be his local branch of sister bank ltd. i'm sure you have your own problems and financial needs that your focus should be trained upon.
no3: i had the same problem with my mum for years. it did used to bug me and cause me loads of grief, but i have now accepted that i will never have the relationship i want from her because of her behaviour and attitude. i just leave her to get on with it and expect nothing from her so i cannot be disappointed.
as others have pointed out, you have let yourself be treated in this way. would your mum and your brother do this for you? it doesn't sound like it....so why do you let them do it to you? it can be very empowering to accept something for what it is and actually look after your own needs. it's not selfish to do this....your mother and brother are the selfish ones and have caused you stress and heartache in doing so. look out for no:1 - if you don't no-one else will and you need to be their for your children and give yourself the life you deserve (and can achieve). please put your foot down and tell them where to go! x