My mom and relatives are soooooo annoying!!!!!!!!!!!!!?

okay soo my hair is quite long and thick and i have some straight bangs too so i have some trouble grooming it especially when my mom's not around. Last week, I attended a traditional ceremony with my dad and my mom couldn't come because she was in London. Since some elderly members of the family were expected to be there, I braided my hair. I wanted to clip my hair at the back but I couldn't cuz i forgot to take some bobbi pins with me. When I went there, a cousin sister of mine walked right up to me, let my hair loose and started braiding my hair. First, I was thankful for what she was doing but suddenly, she started talking about how retarded I looked at my brothers wedding. I let my down, straightened it and pinned my bangs back. She isn't the only one who repeatedly passes comments about my hair. Every one who is not in my immediate family does and they have been doing this for a very long time....ever since i was a child. When I tried talking to my mom about it, she said nothing to comfort me and while I was talking to my mom, i used some really mean words and now she is angry for that. I am sick of people constantly talking about the way I look and a week back, my cousin brother, who is 33 asked me why i look like a homeless person and dat really hurt me a lot. I talked to my friend about this she said messy hair suits me a lot. Many people have said that to me too. But I can't put up with my relatives constantly judging me. I am not really a sensitive person but this really hurts me because it questions my self esteem. When my relatives come to visit my family, they ALWAYS have something bad to say about how i look. The only person who telly me nicely if something is wrong with my hair is my dad. Please tell me what to do. Especially with what my mom said. I am 13 by the way and I am crying because this really upsets me a lot. Please don't say anything mean.