u/Ill-Base-7622

Attempting to fill up my voicemail box is not working.
Can someone PLEASE tell me either how to go back to the default settings on voicemail so it can read to the caller ‘this vm box hasn’t been set up yet’
OR how to use the 1000 messages I currently have to say ‘the vm box is full..’
I can’t stand voicemail. I thought by message 500 it’d be full..