I have no problem with the second one. If a customer asks you something and you can’t help them, you don’t just dismiss them. You might try to find the answer yourself, or find someone else who could help (the opposite of “not my department”). In the end you may not be albe to help them, but you should make an effort as an employee. Like you said, it’s the basis of good customer service, something that I don’t think is taught very much anymore (for reasons that delve into capitalism and other problems).

Third and fourth can go to hell.