What is the opposite of reactive customer service?

That would be 4. Proactive. 

Being proactive with customers would be to reward them with a gift with purchase, free samples, or future discounts. 

Once there is a problem that customers complain about its somewhat too late and management will have to run after solving the problem rather than having the foresight to avoid the problem or complaint.

customer satisfactions must lead business ... above three factors such as inactive ,overactive,non active activities dis pointed customer needs and requirements

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