Who called from 8564261835

They call and no message and I call back and verizon said; "You have reached a number that is no longer in service".  How do they work this?????????????????????

i got this call, no message left, then when i call them back ,it states this is verizon , your call is not complete in dial, please check the number.

I've gotten calls from this number twice a day at different times. No one is there when I pick up or leaves a message when I don't. I'm tired of this s##t!.