Error message when trying to mock Stripe::Charge.create

I am trying to mock out Stripe::Charge.create in my specs. (I know about stripe-ruby-mock, but I want to just mock it myself).

This is my code to mock:

expect_any_instance_of(Stripe::Charge).to receive(:create)

When I call my service object which calls Stripe::Charge in my specs I get this error message:

 Failure/Error: expect_any_instance_of(Stripe::Charge).to receive(:create)
   Stripe::Charge does not implement #create