I can highly recommend 1-800 We Answer Answering Service. They`re nationwide, and can do all of the things that you need an answering to do, including making appointments and they are available 24/7, 365 days.
1-800 We Answer Answering Service provides telephone answering service, call center, voice mail, telemarketing, order taking, virtual office, and mail receiving services, phone installations and sales to businesses and individuals.
Tel: 1-800 We answer
Local Tel: 212-868-1121