Error on some if loops that show a wrong output

Question

I made a code to apply different kinds of discounts to people asking age, genre and if their parent is partner or not. I checked several times and even its a very simple code I cant see where is the problem. Thanks to all of you that answer my threat.

I already tried clearing buffer but nothing changes...

public static void calculoDescuento() {
        float cuota=500;
        float descuento;
        int edad;
        String sexo;
        String padreSocio;
        Scanner sc=new Scanner(System.in);
        Scanner in=new Scanner(System.in);
//asking for the age
        System.out.println("Escriba su edad: ");
        edad=sc.nextInt();
            if(edad >=65) {
                descuento=cuota/2;
                System.out.println("Su cuota es de: "+descuento+ "€.");
            }   
            else {
                if(edad<18) {
                    System.out.println("¿Es su  padre socio?(sí/no): ");
//asking if the parent is partner or not
                    padreSocio=sc.nextLine();
                    in.nextLine();
                    if(padreSocio.equalsIgnoreCase("si")) {
                        descuento=cuota/100*65;
                        System.out.println("Su cuota es de: "+descuento+ "€.");
                    }
                    else {
                        descuento=cuota/100*75;
                        System.out.println("Su cuota es de: "+descuento+ "€.");
                    }
                }
                else {
//asking about their genre
                    System.out.println("Escriba su sexo (hombre/mujer): ");
                    sexo=sc.nextLine();
                    in.nextLine();
                    if(sexo.equalsIgnoreCase("mujer")) {
                        descuento=cuota/100*85;
                        System.out.println("Su cuota es de: "+descuento+ "€.");
                    }
                        else {
                            descuento=cuota;
                        System.out.println("Su cuota es de: "+descuento+ "€.");
                        }
                    }
                }
            }

Code should show the correct System.out of all the posibilities. It actually shows the first option whithout doing any operation.