National Union Fire Insurance Company of Pittsburgh, PA GCS, Chartis Insurance 877-638-4244 non-stop Harrassing Phone Calls from National Union Fire Insurance of Pittsburgh PA Internet

I receive calls at my home from 305-587-2005, every day, several times a day - for several months.

The caller ID says GCS. When I answer there is no one there. I have called the number back many times - and it is answered by an automated message from National Union Fire Insurance Company of Pittsburgh PA. There are 3 choices of response - 1 - opt to have someone call you back and explain their unique offer; 2 - NO, you're not interested; 3 - be added to the Do Not Call list. I have tried all and nothing works to end the relentless phone calls at all hours.

Online searches have resulted in information of Chartis Insurance - www.chartisinsurance.com as the REAL? name of NUFIC - http://www.chartisinsurance.com/us-nufic_295_355066.html 

I have emailed aandh@chartisinsurance.com asking to stop calling me.

I have attempted to call 212-770-700 and 877-638-4244 with no luck.