Multichoice makes it hard for customers to cancel packages

I currently have 3 decoders in my customer account and wanted to disconnect one of the decoders because of electricity challenges. Multichoice does not give me the option of disconnecting using self service and even after I called they said it will take them at least 48 hours. The main motivation is that they do not want to lose any subscription income because of early cancellation of a service. I'm just disappointed that they have frustrated me just to get a few days of fees from only one of three devices. It would be nice if Multichoice cared about its clients once in a while.