I rang once and got disconnected

Some person you can't understand has been Harassing me on several numbers similar to this one I have been asking for them to take my number off the list but they keep being very persistent in what they are trying to sell I am still not sure what that is it is really starting to get very annoying and I will continue to keep blocking their number they also have been trained to deal with every available rejection conversation and never take No for an answer to the point I am just telling tnem to f@#k off they all ways seem to call at rediculars hours to and public holidays no respect at all