Do a search on call blocking devices and/or phones.
Report your callers here, not just to the DNC alone:
To file complaints on Foreign company's and scams:
https://www.econsumer.gov/#crnt
eConsumer.gov: Report Your Complaint
E-mail:
[email protected]
http://800notes.com/forum/ta-d20d86fdc3e145c/reporting-international-scams
Federal:
https://www.ftccomplaintassistant.gov/#&panel1-1
https://consumercomplaints.fcc.gov/hc/en-us
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:
[email protected]