Harrassment Mamela Consulting

From Monday till now I have received 11 calls from them and in each and every one I have asked to be removed from their call list. I am at my whits end with these people who do not understand plain English. I have even asked them if they do not understand the language....I have answered my phone with a rude "What?" and not even that puts them off. I am sick of this harrasment and would advise anyone if they mention Mamela Consulting to run as far and fast as possible. Stay away from these people