Circular Reference

I have Cox Phone & Voicemail service.  I scheduled a tech service call for issues with my internet service.  Cox left a voicemail today for me to confirm the appointment for tomorrow.  (Before I address the actual issue, is it necessary for me to confirm an appointment, or will the appointment time be honored as originally scheduled?)

Anyway, when listening to the voicemail, it says "Press 1 to confirm the appointment."  However, when you press 1, it simply replays the message, as it does with every Cox voice message.  Not sure how to get around this issue.  I waited 15 minutes on hold to call Cox phone support and she had no idea whether I needed to call in to confirm the original appointment or not and could not understand the "Press 1" dilemma.  Anyway, a lot of words just to say that I was curious and confused about the voicemail issue.