Vodacom looses my info - passing the buck???

In Aprl '11, I received an excep high acc from Vodacom (I did not receive an SMS, when my data run out). On the 16th of May '11, I spoke with Buntu at the call centre (said his name is my ref no), about my acc. I requested an overall limit of R1000 per month be placed on my acc, together with receiving SMS's for out of bundle data etc. I have received such, until last Thurs (5th Feb 2015), when I had a break-in, and my ipad was ******. I have not received any messages to inform me that data is supposedly used. Early the next morning, when I have spoken to Vodacom already 4times (the last call lasted 1hour 8 minutes), with 3 ref no, I was told that there is no sign of my request in 2011. I was also told that it is my responsibility to \renew"my request when upgrading every 2 years. Strange how my banking details need not be renewed. A R5000 bill is now on my name"