If an art director from Toni and Guy gave me her card and said to call and should be a hair model should i call?

Toni and Guy is a well known brand and to be affiliated with them is great for exposure. Be sure to do research and make sure the person that handed you the card is actually who they say they are. Give that person a call to see what they are offering you but if anything seems suspicious or out of place, then do not agree to work with them. However, it is not uncommon for people to be scouted for such opportunities--what is important is to make sure that you are working with legitimate people.