not a very good listener...

Maybe that is what they mean by "not a good listener". Although you hear every word they say, it may not seem that way. The key phrase here is "not good". You can be a listener just by listening. To be a good listener, you should be attentive to the speaker and face them when they are talking. You can also help them out somehow, or make comments on what they are saying. This way, they know that you are listening. Hope I could help!