Vodacom upgrade dispute in contradiction of consumer protection act

Upgrade dispute : Wanted to upgrade, as was due. Vodacom branch then advised that my finance option has been removed, due to being under debt review. Contacted vodacom online to assist, who then advised that due to risk status as a result of debt review, the only upgrade option would be for maximum package at R 1800 per month, over 36 month term. I emailed formal complaint to Adrian Schwartz at vodacom, to challenge same, as is in contradiction to the CPA, forcing me to take a 36 month contract, as consumer surely has the right to choice. Stating that debt review carries risk, but then refusing my upgrade in price range and over extending me with a 36 month term, makes no sense and is surely bullying.