Does your call blocker have area code blocking? If so, block it by the area code. The newer call blockers do have some area code blocking abilities. If you have it, this usually solves the use of them calling from same number sets and easier then blocking them individually. So, if it really is Conns calling, then simply send them a C&D letter via USPS certified return receipt mail telling them to stop calling your number. Most company's usually do not get the picture until its sent in writing.
Report your callers here, not just to the DNC alone:
To file complaints on Foreign company's and scams:
http://800notes.com/forum/ta-d20d86fdc3e145c/reporting-international-scams
https://www.econsumer.gov/#crnt
eConsumer.gov: Report Your Complaint
E-mail:
[email protected]
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]