Interesting pattern of class from this spoofed number. 7-17-15, 11:47am; 9-8-15, 2:37pm; 10-5-15, 4:49pm.
I blocked it after the second call, but when there was nothing for a couple of weeks I removed it from the list to free up more space.
It is back on now until I see that it has not been used for several months.