We all have left voicemails to several companies and have experienced the situation of waiting for many weeks to get a call back from the company to get our quires resolved. While the first assumption would be that the supervisor has more things to do than just look at the voicemail, the truth is, it only takes a while to get there. The regular voicemail is, after all, about a minute long, with the introduction being a few seconds long, with the other half dedicated to the actual message.