Family issues

Hey so I’m the oldest kid in the family and my dad lives overseas he doesn’t really tell my mum or me much about what he does. Anyways he does stuff without telling my mum and when my mum asks he gives brief explanations. My mum gets really upset because she wants to know in detail what he does what he is spending his time doing, my dad only says I told you before you keep forgetting. My mum says he hasn’t said anything before, I’m stuck in the middle very lost. What should I do . I tried to talk to my dad and my mum about it but they just brush it off.