got call at 5:15 am with some Spanish speaking woman babbling then she hung up, just got a call from 213-205-7754 at 10pm answered and no one on line I feel the two calls are connected

I've received phone calls from those 2 numbers, and 2 others in the same area all around 10pm or 5am. I've never answered them, but not sure how to stop them from calling. It is quite annoying.