STOP CALLING ME

This is by far the worst company I have ever come across. A couple of months ago, I sent through a DETAILED email informing them of 1 account that I was aware of and paid, and I told them numerous times that I am not aware of the one they keep calling me about. Some of them keep saying they will make a note on the system, but every single day, someone else calls me, repeating the same thing. I AM SICK OF THE CONSTANT CALLS. PLEASE STOP CALLING ME. You clearly did not read my email, so you resort to calling me every single day for something I already told you I AM NOT AWARE OF!!!!!!