Harassment with continued spam calls and rude behaviour

They keep harassing me with unwanted spam calls about products I am not interested in. Then when I tell the sales person I am not interested and to remove my nr from their database, I get a very rude response or the phone simply gets put down in my ear. This has happened numerous times! So they operate on harassing people with continuous unwanted calls and then when one requests to be removed from the database they simply turn rude and cut off the call with no further decent behaviour! I would never ever take my business to this company and will advise everyone not to either. If a company’s representatives are able to treat potential customers this rudely, there is no confidence that they would treat their actual customers any better!!!