Often there issue here is that they're not looking. Once is enough to ask your angel for assistance with a particular subject. After all you wouldn't go into a coffee shop and keep demanding a cup of coffee over and over again until it's handed to you. So be patient and perhaps decide on a particular answer, ask for a feather, or to feel a cool touch on your arm or face. Be specific because once you find a connection your angels will be delighted to use it constantly.