Abused customer

After I recently complained about Vodacom, I received a call and the assisted me. Then after 2 weeks my number was disconnected again on the 3rd of September and they sent an account that I will be billed for a number that is disconnected. Then why am I paying for a service that is disconnected. And if I don't pay this line al my 5 lines will be disconnected. I feel like my money is demanded even when I am not happy.... vodacom just wants me to pay and keep disconnecting my number just because the feel like it.