voicemail help!

I know setting up voicemail is SUPER SUPER easy. But I got my torch last week and for some reason I can't set up my voicemail. It says it says for me to press pound, and asks for mailbox number. so i'm guessing that's my phone number. So I type it and it says please enter the mailbox number specified by your system manager. I'm sorry if I'm dumb to this but I really don't know what to do. I've tried and tried. someone please help me ):

Try calling your own phone number first. Barring that, ask customer care what your voicemail retrieval number is. This is the number your phone calls when you hold 1 to retrieve new messages. That MAY need to be manually reprogrammed in your phone, though it can be corrected quickly and remotely by customer care.

But as you have a Torch, why not use visual voicemail? Just ask customer care, and it shall be done. Just be warned that surprisingly few people know of it.

Good Answer man