To dream that you see an answering machine means that there is some problem you havent been able to solve. The dream shows that some message is not going though. The answering machine shows that you should tell whatever you want to.
Dream dictionary: Answering Machine dream meanings
To dream that you receive the message through the answering machine means that you have the urge to communicate with other people more than you do at the moment. If you left some message on the answering machines during your dream, then such dream indicates some important message you wish to spread to the world.
If you dream of seeing an answering machine it means that you do not pay attention to someone who is trying to say something important to you. Maybe there is something for you hard to understand.