I too am receiving the same harrasing calls early in the morning & have asked them repeatedly not to call. We are former customers & have used their product 20 years ago. They consistently call saying they have a new product we need to use or we will ruin our septic system. The calls are all hours of the day sometimes 3 times a day for weeks. Then it stops & months later , they start all over again.
We have asked them to remove our name from their list, we have filed reports with the the do-not-call registry numerous times. This is harrasment & they are very rude.
SO...I know exactly how you feel. I feel like I am trapped & can do nothing about it, hopefully filing this report will stop some of the calls.