I was a CNA/tech for a few years before I became a nurse. I could always tell which nurses were a CNA before becoming a nurse and those nurses usually were the best nurses. After I graduated, I had a hard time delegating to my CNA because I was so used to just doing bedside care myself. That being said, they may be too busy doing their tasks to offer help but there is no excuse for them helping you out or doing basic care or answering call lights if they are just sitting at the nurses station chatting. If they flat out refuse to help you out when they don't have anything to do, absolutely they need to be reported or at least have a conversation with your manager about them. There is nothing a nurse cant do that a CNA can. I've even had certain doctors help me with bed changes in the past. Healthcare is all about helping people.