Disconnected 3 times in one month after paying

My dstv service has been disconnected for the third time now in three weeks in the span of one month. The same thing happened the month before. Even though I paid total amount outstanding according to Dstv app and on previous two occasions contacted customer services and was told my account is just a glitch in the system and they will rectify it. Now its been disconnected again and I will have to spend money trying to fix it again. I dont think this is fair as I pay the balance they supply me why not supply me with the correct amount then!! They take money that I pay into my box office account as \payment"for the amounts outstanding. How do you justify this? Fix the problems at your own cost and rectify my box office or cancel my services completely I have had more than enough of people not providing the services they promise to. And always having to pay for their mistakes."""