What is the point of spam calls that hang up searching

Top keyword related from Search Engine of what is the point of spam calls that hang up

Keyword	CPC	PCC	Volume	Length string	Score
what is the point of spam calls that hang up	1.29	0.1	3586	44	68
spam calls that hang up	0.87	0.8	9107	23	56
what is the point of spam calls	0.64	0.3	2982	31	75
why do spam callers hang up	1.16	0.8	1712	27	95
why spam callers call then hang up	1.09	0.7	5126	34	60
why do spammers call and hang up	0.01	0.6	9619	32	29
what is spam calls	1.6	0.8	6863	18	88
purpose of spam calls	1.22	0.5	4837	21	95
why is it called spam calls	1.87	0.2	5430	27	72
what is spam calling	0.59	0.3	9787	20	10
why do spam calls exist	1.1	1	7003	23	61
why do i keep receiving spam calls	1.02	0.4	9981	34	90
how do spam calls work	0.37	0.9	7799	22	65
potential spam keeps calling	0.86	0.2	299	28	46
why do people spam call	0.25	0.3	3186	23	67

Top URL related to what is the point of spam calls that hang up