mocking in jest not returning multiple values

Question

I am trying to mock a private variable in typescript using jest, below is my mocking code

import { ClassToMock } from "../../../commons/abc/ClassToMock";



jest.mock("../../../commons/abc/ClassToMock", () => {
    return {
      ClassToMock: function () {
        return ({
          funToMock: mockFunToMock
        });
      }
    };
});

test("", async () => {
funToMock.mockResolvedValueOnce([objA,objB]).mockResolvedValueOnce([objC]);
serviceToTest.fun() // fun internally uses classToMock
});

Now the problem is [objA,objB] are returned correctly but when second time I do the function call objC is never returned. Not sure whats going wrong