***** on my Vodacom account

I called Vodacom accounts department on January 2022 regarding my data contract *** and the *** numbers to cancel the contracts as they where due for upgrade and i wanted to cancel them i was then informed that because i missed some payments on the in 2021 an extra 4 months was added on the contracts as that was the new rule i then asked about the combo deal i took last year August on the *** and *** numbers where i was than told that i am paying for extra 2 contracts that are on a 36 months contract i told Vodacom that i asked for a 24 months contract not a 36 months contract , today i received a bill of R1433.29 from what i was initially paying which was R1054.49. which i was now told by an agent that i added an extra 250 Min there was also a 10 gig month to month contract that i cancelled last year when took the new contract to my surprise it is still active . My question is how would i want to can a contract and add extra min when i was complaining about the bill . right now i have been put from pillar to post and i want this extra things to be cancelled as i never asked for them .if this is how Vodacom is operating when we query our bills then i would rather cancel this contracts . i want an agent to call me regarding the mess they made on my account.