Hey @tk1235 , Welcome to the 3Community 🙂
I have edited the number from the post for security purposes. With voicemail, the number that you receive in the message will bring you directly to the voicemail that has been left, for example, if you had multiple messages calling 17100 would bring you directly to the voicemail that has been left so there is no need to be alarmed by this. If you have concerns you can also call 171 and this will bring you to the mailbox where you can listen to all your voicemails.