Am I doing something wrong?

I feel that I am really depressed. I try to tell people but they don't seem to listen. I know I need help but I don't know how to get it. I have asked my mother to take me to a doctor. But she won't. I do feel that I will do harm to myself if I don't get help soon. I just want someone to listen to me. And try to help me instead of saying I'm talking stupid. I don't want to get hooked on meds but if that's the only way to cure me I will do. I will try any and everything. I looked up some information on the net and I did as they advised. I exercised,I ate right. I did everything and I still feel that I have no reason to live. I just want help. I can't go to a doctor on my own. I don't drive and I can't go anywhere. I tried calling the suicide hotlines. They sent the police and an ambulance to my house. My family was so embarrased and ashamed of me. They made up some lie. Saying it was a prank call. It wasn't I wanted help and I figured that was the only way to get it. Btw I'm 15.