How would you respond as a manager to rude comments that customers can make like the ones listed below

1-You dont know how to do your job

2- If you dont give me a discount I will go somewhere else

3-I want to talk to your supervisor because you dont know what you are doing

4-Can you work faster?

5-Its my account I dont need to show my ID

6-You need to do what I say because I pay for your salary.

7-Make a racist comment

8-I want to be helped by a male and not by you

9-I will wait for you outside.

10- Go back to your country.