How can you reset the default voice greeting for US Cellular voicemail?

[justcurious]

I would like to reset my voicemail greeting to the default computer-voice thing that just says "You have reached blah blah blah"... I have listened to every option I can find in the voicemail options, and found that I could delete my recorded name but it will not give me the option to delete the recorded greeting. Is this something that I have to actually call US Cellular for to have them reset the voicemail?