What is the telephone number for customer service? 1-800-566-0065, Customers can also use this number to reach to the customer service representatives of the company. 1-800-238-0271 is the fax number of the company, which can be used to send the orders.What is prepaid customer service number? The Customer Service Phone Number of ATT Prepaid is: 1-800-361-4470..What is enterprise customer service number? Enterprise Customer Service Phone Number (fastest): 1-800-264-6350. Hours: 24 hours, 7 days; best time to call: 8:30am.Is there a customer service telephone number for? General Customer Service: 1-877-383-4802. For faster customer service, please use the links above to contact the appropriate customer service center for your specific needs.