Data notification sms 'Not Guaranteed'& I must pay

In July of 2012, I laid a complaint with Vodacom that it was unacceptable that contract data users only get notified 6-15 hours after their bundle may have expired, especially when they have shown that the facilities to have live notifications are there, as prepaid customers get these alerts. A gentleman contacted me and assured me it would be investigated. I brought this matter up again with Phologo Machailoe in April last year, who said he would get back to me, I am still waiting. I have subsequently not received any notifications indicating usage on my three data cards since around August last year. I have queried this several times and paid Vodacom several thousands of rands as a result.<br> <br> I have now, again, just gotten off of the phone with a Vodacom customer care agent to enquire about my out-of-bundle balance on one of my numbers, only to be told I owe another R1800.When I asked about the notifications she said that they were not 'guaranteed'.. NOT ONE OF MY NUMBERS IN 8 MONTHS has receieved ONE notification. Once in a while, I understand. But 8 months?Now I must pay AGAIN??<br> <br> I have been with Vodacom since 1994. This is how you treat me? Really? Excuse the language, but ***?!