Mislead by a Vodacom agent!

Hitherto, I've been a happy Vodacom contract customer for over 6 years. Just last month someone called me from Vodacom and told me that they will reduce my monthly contract bill with a better offering on data. I agreed to that because who wouldn't want to save money on their contract bill every month! However it has come to my attention after seeing my statement that I've been billed almost double my normal contract instalment because there has been an add on of data bundles on 2 of my contracts which I am unaware of. So I've been mislead by one of your agents who has **********ly added on data bundles to my contracts and it lands me with an hefty bill to pay at the end of the month? I phoned your customer services and the best they could do was remove the data bundles which I had no idea about, but I've still got to pay the huge bill because of your misleading agents!I will not be renewing my contracts going forward if this is the way Vodacom wants to do business in an ********* way. My advice to the public... don't accept any telephonic offers from Vodacom with the premise of it reducing your bill! Please also remove me from any telephonic ads or promotions as I don't want any calls from Vodacom going forward as from my experience it will cost me more financially and waste more of my time trying to sort out your misleading ***** endeavours where you guys still benefit from the boost of a quick buck. Thank you!