If You Are Unable to Resolve a Customer's Problem on the Spot

If you are unable to resolve a customer's problem on the spot, you should:

A) tell them to come back another time.
B) refer the matter to another staff member.
C) add it to any other existing complaints requiring follow-up, and resolve each of them in the order in which they were received.
D) let them know you will get back to them and, when you next get a chance, follow it up and contact them.
E) let them know you will get back to them by a specific time with a solution, and do so.