My caller ID showed this number. called 3 times in 1 hour

this number and another number from the same area has called me several times over the last couple of hours. Every time I pick up, no one answers or it hangs up immediately. When I try to call it back it says it is an incorrect number.

Same as others. 6 calls from this number in one day. Tried returning call and it said it was an incorrect number. The one time I answered there was nobody there.