DSTV Harassment

Since DSTV started selling life policies etc. I receive 10 plus spam calls a day. I already have DSTV and am not interested in any other products from them. This is harassment and they should delete my NR from their calling list. Unfortunately they only have places to buy and contact them on the web. No email or any way to get hold of them directly. DSTV/Multichoice your website and service stinks. I have a premium subscription and numerous occasions tried to get streaming but are just being send from one office to another with no result