Answer:
Unfreezing
Step-by-step explanation:
we know that by the Kurt Lewin change theory 3 stages model of the change that is the unfreezing change refreeze model that is require prior learn to reject and replace
so that is related here in this case stage is Unfreezing
in this stage process when people are finding method to let go their old pattern of behaviors
so that company analyze their customer service so they decrease their problem that is affect customer service
so this case stage is Unfreezing