If you are a minor and your parents earn income that might be haram for example they service businesses among them are bars, and deal with interest like when paying deposits on a apartments they rent out. My question is that there is I think (several hadith) where it says that Allah does not accept du'as and prayers of those who get there sustenance through haram means. If a little of the sustenance (money) is from haram means, and you are a minor in this case does hadith count in your case?
When the son/daughter is in need for expenses, then he/she is allowed to take from his/her father's earning even though it is haraam (forbidden). In such a case his/her du'aa' to Allaah won't be affected, since being a minor, he/she has neither might nor power. But while doing so, he/she should abide by the following observations:Not to expand and widen the scope of taking or accepting from his/her father's illegitimate earnings. He/she should try if he/she is able to earn a halaal income to become independent and self-sufficient and no longer in need of the father's support. To try as hard as possible all ways to admonish and advise he/her parents in the hope that Allah Almighty may guide them towards repentance from haraam earnings.