Why Can’t All Voicemail Be The Same?

Just a question… how come on my cell phone, I hit 7 to delete message and on my work voicemail it’s 3? I get the two confused all the time. It’s the same lady talking to me on both systems for crying out loud – so why does she change her mind all the time on what to press? :-)

And that’s what grinds my gears, Tom?