Prepaid, no records available.

I am currently on Vodacom prepaid, I cancelled my contracts that I had with them due to terrible service and billing issues, that is why I moved to prepaid. <br> <br> I have been trying to get hold of a statement that will show me how much i have spent on my prepaid SIM for the tax year 2014/2015.<br> <br> I have called, been to the branch and called again. I have been told that it is impossible to provide it to me and that they only can give me the last 3 months. <br> <br> It is impossible that Vodacom deletes this information after 3 months? How can you have no record of a clients transactions? Surely it is a legal requirement to have this information available to clients? <br> <br>