Yes I do. The prophet Daniel saw angels and heard the angel Gabriel speak and give a lengthy message. There were shepherds who saw angels around the time of Christ's birth. The apostle Paul saw angels. John got parts of the book of Revelation by means of an angel. If it could happen then, it can happen today.

We've all heard demons. They speak all the time if you will listen. Better to learn how to hit the 'mute' button. Some people have seen demons. It can come as a form of the gift of discernment of spirits.