Preventing execution of a function

[terminalXXX]

class MyClass{};
namespace BI{
    class BusinessInterop
    {
    public:
        static MyClass* func(){printf("BusinessInterop");return new MyClass();}
    };
}
namespace BS
{
    using namespace BI;
    class BusinessService:public BusinessInterop
    {
    public:
        virtual MyClass* func(){return BusinessInterop::func();}
    };
}
namespace XS
{
    using namespace BS;
    class xxxService:public BusinessService
    {
    public:    
        virtual MyClass* func() {return func();}
        MyClass* funx()
        {
            return func();
        }
    }; 
}


namespace XT
{
    using namespace XS;
    class xxxServiceTest:public xxxService
    {
    public:
        virtual MyClass* func() {printf("Business"); return new MyClass();}
        void Call()
        {
            funx();
        }
    };
} 

I would like to know how to prevent the program print out "Business", I'd like it to call the base class's static function. I have tried to changed MyClass* into void* but it still prints Business :grumpy:.
My challenge is to output "BusinessInterop" without any changes made to the polymorphic structure as designed. Thank you.