Our Dallas Main Office Street Address:    8989 Harry Hines, Dallas, Texas, 75235 Mailing Address:  P.O. Box 542288, Dallas, Texas, 75354-2288 Lobby Hours:        Monday through Friday, 9:00 am to 5:00 pm Drive Thru:            Monday through Thursday, 7:30 am to 6:00 pm                              Friday, 7:15 am to 6:00 pm