Final answer:
The best action is to calmly and professionally handle the situation yourself before escalating to a manager.
Step-by-step explanation:
The best action to take if a customer is irate and insisting to speak to a manager right away is to calmly and professionally handle the situation yourself before escalating to a manager.
First, try to understand the customer's concerns and empathize with their frustration. Apologize for any inconvenience caused and assure them that you are there to help find a solution.
If the customer continues to demand to speak to a manager, politely inform them that you will find a manager for them. This shows that you are taking their concerns seriously and attempting to address the situation appropriately.