Offering easy and quick access to your support team is one of the best ways to delight your customers. Even if they have a question that can be answered via email, being on the phone with them gives you the opportunity to calm down a frustrated customer, provide solutions faster, and present a positive image of your business by being friendly, personal, and helpful. On top of that, as in marketing and sales, it's important to be present wherever (and however) they're looking for you, and if they're searching for a phone number on your website, only to find that you can't be contacted by phone, you're likely setting them up for an even more negative experience than the one they were already facing.