ID says "customer service." Phone rings a few times but I never pick up. Why is this crap allowed? should be illegal.

It is..

Do consider maybe getting a call blocking device or phone.. You can google them and many are around $60.00 or so.

Report your callers here, not just to the DNC alone:

https://www.ftccomplaintassistant.gov/#&panel1-1
https://esupport.fcc.gov/ccmsforms/form1088.action
https://complaints.donotcall.gov/complaint/complaintcheck.aspx?panel=2

By State DNC lists:
http://800notes.com/res/DoNotCall.aspx

FCC Abandoned Calls Complaint form:
http://www.fcc.gov/cgb/consumerfacts/1088D-R.pdf
email:  fccinfo@fcc.gov

I have received a number of calls, on my land line, from 607-203-5580.  Called ID reads "Banking Unusual."  The one time I did answer, I heard an automated voice recording.  These calls are increasing and I want them to stop.  I seriously suspect a scam/fraud of some kind because references are made to level of income for the household.  Of course, I hung up.....but I continue to get calls.

Please do whatever is possible to stop these annoying and scary phone calls.
Thank you.