Sales Callw 0n Phone

Well, I get about 20 to 30 salesw call a day.. on my business phone… this is a number I have had for over 30 years….. now it is becomming worthless… I am going to turn on the if you are not in my list then it does no ring… If you are a new client please just leave a message and I will add you to my list. I check my emails several times a day….. sorry but I now soend more time answering the BS calls than I get to work… really sucks!