My mother died 12 years ago and not one family membered has bothered to call

Hello & thanks for reading my thread.

 I was wanting some advise on whether I should say something  to my so called relatives- or just let it + them go. My mother who was good to everybody  passed away 12 years ago.  Like my mother I have  always been the one to send birthday xmass presents and be there to support  in general.

 I cared for my mother alone for many years   and never once did they ask how i was after she died despite  knowing it was just mum and i alone.

 Mostly I am upset for Mum because the one thing she would have wanted was for them to  support her daughter & expected tbo.

 The family have been up here several times to visit  QLD from NSW.  Never once have they stopped by or even called. I dont understand it,.  It hurts me   a lot.

 What should I do?

 Thanks everyone