Overcharged - Unhappy!!!!!

February 2022 - A Vodacom agent called me to upgrade from a red 2 gig to a red 3 gig. I was paying R 320.87 , he said the upgrade to 3 gig would be +/- R 40 and I agreed. I told him to cancel the extra 100 minute contract @ R 47.83 so that the it could balance out. So my new instalment for the 3 gig is NOW R 410.43 and my 100 min bundle at R 47.83 is still ACTIVE... I called Vodacom 3 times thereafter asking for the cancellation of the 100 minute contract... 24/05/2022 - last attempt - called today - the agent said it was deactivated but i was still being charged then she said i will deactivate today ?? so was it deactivated or not???????? Current instalment - R 536.99 - EXTREMELY UNHAPPY!!!!!!!!!