Hi Dawn,
For each phone number on the site, there are two entries in the CMS. The first is the visible number, formatted like this: 555-555-5555. The second is in a URL field (not visible) and formatted as: tel:+1-555-555-5555.
Make the click action connect to the URL field and have the label display the normal number and you should be good-to-go.
Best,
Eric