During the stage management of an agitated customer, follow 80/20 rule. Listen for 80% and then speak up for 20% only to ask question to vent the remaining. Do you agree?

I agree with & endorse mr.Mohammad's excellent submission, it makes perfect sense.

Thanx for the invitation

listening to the client is the key factor, sometimes it is a 100% rule where listening to the client will assist you fully in resolving the issue or inquiry s/he have.  it is related to your field and to the amount of knowledge that both you and the client have on the product (yours should always be 100% knowledge in the product or service)

No ,

I t all depends on the individual situtatiation

 iam agre with Mr.Mohammad AlSukkar

Thanx for the invitation