Angry customer

My TV is currently not working since the 7th March 2020. I called Multichoice to request that my service be disconnected as my TV is not working and they tell me that they can't disconnect it as they can only do that on my payment date. I don't see any reason of not being able to suspend my account as they do that anytime if you don't pay. I don't owe any cent so now that they want us to go with whatever they want to tell us, I'm not budging into that as I'm the loser at the end of the day and they are benefitting on my expense. I just need my account to be suspended end of story