No means no!!!

After being contacted numerous previous times by this Company and having stated firmly yet cordially that I am not and will never be interested in their products, they keep phoning me. I am not allowed personal calls at work and my work as Graphic Designer includes very strict deadlines for the magazine layout. Even after stating this to their call agent she still tried to finish her sales pitch. I am going to get a warning if these people continue to phone me! I tried phoning them back on their number as per the website, but I can not get through. Please stop phoning me, I am not going to buy anything from you ever.