Purposefully Withholding Information

I turn to Hello Peter out of utter frustration with Vodacom. Why do you make it so hard to do business with you? Every month I waste hundreds of Rands because I am on the incorrect package for my needs. My contract is due to expire soon and I would like to gather information on my account so that I may select the package best suited to my needs. All I ask is my average data and minute usage for the past 24 months, but after about 4 hours on the phone I am sent from pillar to post with no satisfactory answer. Vodacom sits with all this info, it should be freely accessible, but my feeling is Vodacom purposefully withholds 24months worth of data so that users cannot possibly select the correct package and the plunder continues.