Charges different price than what you sign for

Did 2 upgrades in January 2026, both exactly the same phone, package, price, etc. When getting my first invoice, the amounts were not the same as what was signed for and agreed to. This is unacceptable!! This is because of annual increases but I have not even paid my 1st installment yet? Called the call center and basically advised I must take all back to the shop, cancel everything with Vodacom but shop is telling me a different story. I want to return all received and cancel everything with Vodacom because they quick to take your money but pathetic to get back to you or keep their word.