terrible service

my Vodacom cellphone was blacklisted for no reason at all,when I contacted the call centre they said that they can not see any reason for that being done and it was probably a mistake, after that we received no feedback,when we contacted them again they sent us a form to unblacklist the phone which we filled and sent back.we are still awaiting a response and the form clearly states that the query will be dealt with within 48 hours (29/07/15).<br> when we contacted Vodacom yesterday (6/07/15) we were told that it was a bad debt. that is absolutely ridiculous! we have a debit order that is coming out every single month and yet we are told that we have an unpaid amount! <br> this is the worst service I have ever experienced. this is not what i expect from such a big corporate like yourselves. I expect answers as this is not my fault at all! <br> I look forward to your response as this is a matter of urgency.