sinon.js : stub call does not increment callCount

sinon.js 9.0.2

In test I create a stub:

test.js

const myHandler = {
  handle: (some_var_to_pass) => sinon.stub()["resolves"]([{ whatever: "whatever" }]),
};

Then hit the actual code from the test as some endpoint request (with async / await) which executs the code below:

code.js

module.exports = (myHandler) => ({
  getStuff: async (req, res, next) => {
  const var1 = "something1";
  const var2 = "something2";
  const my_response = await myHandler.handle()(var1, var2);

  console.log("my response", JSON.stringify(my_response)); //correct, returns { whatever: "whatever"}
  console.log("Executed stub: ", myHandler.handle(some_var_to_pass).callCount); //always returns zero

I control that myHandler.handle correctly goes through the stub creation and the my_response is

{ whatever: "whatever"}

However, myHandler.handle().callCount remains zero (not undefined). What am I missing to make it increment correctly? Or I need to actually set .callCount return to 1 when I create the stub (would be weird)?