Annoying Marketers…

Can Multichoice start regulating it’s marketers…like seriously we can’t be saying NO to these narketers everyday…since December I’ve been flooded by calls from marketers literally forcing me to buy the new explorer as I still have the older model, naturally I say no…the next day they are calling again,and the next day and the next….I’ve asked them to remove my number from their list, they are still calling, I blocked their number they are now calling from a different number….can this stop…it’s annoying…I will change my decoder when and if I see the need