Miller-Plante, Inc. Telemarketing in excess! Maitland Florida

We have been registered with the Do Not Call list for several years. While in the past we did order septic system supplies from them, we have used other products that were less expensive and actually worked with our system better, so we switched companies. We have not done business with this company for at least 10 years and had requested the Miller-Plante Corporate office them to stop calling. Their telephone numbers are 407-875-3131 Corporate, 800-929-2722 C/S, 888-475-0004 sales. I have also called the other two numbers and made numerous requests for the calls to cease. The address is Miller-Plante, Inc., P.O. Box 940711, Maitland, FL, 32794-0711. No street address. Website .https://www.millerplante.net We keep getting sales calls anyway. We have repeatedly asked Miller-Plante sales reps to NOT call us. Today we received the third call this week from this number, the other two hung up on my husband when he answered the phone, and I answered this one, and a male sales rep came on.. I told the rep that we no longer are interested in their products and to stop calling. Sales rep then tells me " I'm only doing my job" I said that "I don't care about your job - stop calling." I hung up on this rep not getting his name. Then he called back and spoke with my husband and started swearing at him. He also hung up on the rep. We would be interested in participating in any class action lawsuit that would make this company STOP these harassing and annoying phone calls. We will never do business with this company again, nor would ever suggest them to anyone else. We do not know why they are still trying to do business with those that state so emphatically otherwise!