Upgrade failure

Hi<br> <br> I have been a customer of Vodacom for nearly the past ten years.<br> <br> My account each month amounts to between R3500 and R5500 per month in respect of all the numbers I have. I last upgraded a number during May 2015 with no problems. Thats almost R60000 per year. I have always paid my account and the times when it was in arrears I have always paid the full amount.<br> <br> My debit order during September 2015 didn't go off and when I got the sms stating that the account was in arrears I immediately rep**** and an arrangement was made according to the system to pay on 12 October 2015. On 12 October I received a message confirming the arrangement to pay R5450 and I made a payment of R5510 on 12 October 2015. On 13 October 2015 I saw that an amount of R40 was still outstanding and I made payment of R60.<br> <br> After checking online and at the call centre that I could upgrade, I was told at the vodashop, to my embarrassment, that as a result of my payment history I could not upgrade without making a payment of R8000 towards the upgrade. I find this totally unacceptable!