No reply on request or complaint

I am still receiving sms and notifications on the decoder that I owe multichoice money, but I have paid the amount they said where outstanding and also when I made my last payment I paid extra to ensure that there can be no outstanding amount.<br> I requested a statement from them one month ago which I have not yet received, to me this is an indication that I do not owe them anything, but instead that they made an mistake which they do not want to admit.<br> Further more they are only able to send you a statement for the last 6 months, I get the idea that they will not send the statement until the mistake they made no longer appears on the statement.<br> Neither do they contact you if you complain, they only send an auto response to inform you that they are to busy to attend to your concern.<br> But they have a lot of time to spend on marketing to encourage clients (which they cannot attend to) to sign up for their service.