Help me and my sister for rent/food

Me and my sister are having some financial problems. We are about to get kicked from appartamant we are renting, because we dont have money to pay it. She is studying production, and iam studying architecture, both we are working as waiters to pay our schols. If we dont get some money, we gonna live on street. From parents, we have only mother, but she has another kid, with another man, not our dad, and she cant help us this time, she gave everything she had. We are from Majdanpek, and we live and study in Belgrade. So if we lose this place, we gonna probably get back to our hometown, and we wont study anymore, whitch is bad, because we like what we study. I am beginng everyone that can help us a bit to do that, PLEASE.