Onair On Behalf Of Multichoice Call Spammers, Harrassment

They keep calling me telling me that my HD decoder and satellite dish need to be upgraded and replaced with a new explora decoder and new satellite dish as they are going to stop working. I declined the offer, but they have not stopped calling me. They call me on my cell number every day sometimes more than once a day. This is harrassment and should not be allowed.