Welcome to Avis USA Customer Care Helpline Contact Number! Avis is one of the leading car rental company. Make a car reservation from Avis Rent a Car rental. Book low rates online and reserve a rental car. There should not be any problem as this call center is one of top rated numbers. It available in major locations like United States, Australia, Asia, Africa, Latin America, Canada, Caribbean, Europe, Middle East, New Zealand and much more.