Unless you have a “vanity” number, or one that is very (and I stress very) easily remembered i.e. XXX-buy-this, a phone number is a complete waste of precious seconds. NOBODY (except for The Rain Man 🙂 remembers phone numbers! And the more you repeat it, the more annoying it becomes. You’ve heard the Ads which repeat over and over the phone number, tell me this doesn’t aggravate you. If your Ad has made an impression customers will find you.