Spam calls and Rude staff ...way to stimulate the market Cartrack

Spam calls is such a pain especially if company's such as Cartrack keeps using the same telephone lists , despite several previous calls where I asked them not to contact me again as I do not have use for their services or product Now when the consultant phones me and I decline it once again there is no telephone manners or any decency related to the call , they just hang up and waits your time .....Car track please wake up and train your sales staff at call centers....when they are rude the intended customer will not buy your product Wow I am now so eager to buy your product from all the spam calls and rude staff ....great way to stimulate the market !