Called my phone several times, no message, but when I call back, it is not in service

None keep calling all night and day

I am disabled and with current medical condition am NOT to having stress on medication to re-leave  stress per medical condition, and whom ever ownes this number when we find out we are pressing criminal charges this number calls my emergency cell phone several times a day no one is there when we answer, no message, but when I call back, it is not in service..

keeps calling all hours but hangs up when i pick up. when i call back its busy.