Well-optimized FAQ Center
An optimized FAQ hub or Help Center can help your customers, find instant answers to their problems with no effort.
FAQ can be incredibly useful for a customer to get an instant answer thus saving time for both user and customer service folks. If a customer finds an answer to their question in a self-serve way they wouldn't pick up a phone to call or send an email or initiate a live chat.
Time is money and your team shouldn't be spending any time answering the repeated questions. The common or popular questions and answers should be authored in an easy to discover FAQ hub or Help center.