Vodacom renewing contract without my consent

What Vodacom did to me is uncalled for, they renewed my contract without my consent, what happened was an agent called me saying he wants to do a migration for me so that I pay less for more airtime,i refused, i even asked " what is the catch" because they can't just give airtime out for free, he said it's a benefit because I have been with Vodacom for long.i made it clear to him that I have two cellphone contracts that are due to end in February 2023 and I want them cancelled,i made it clear to him i don't want a device i want to stop the contract.he insisted it's just a benefit and it will not affect the remaining months.later on that day i received an sms and it was Vodacom thanking me for renewing my contract that is now due to end in 2025. When I try calling i don't get through to cancellation department.the agents transfer my call only for it to ring until it's dropped.i honestly feel like I'm being forced to stay in a contract i don't want,i bought my new cell phone cash,i have wifi at work and at home why would I pay a lot of money just for airtime if I could just go prepaid.the agents are so selfish i believe he **** to me because he knows he'll get something out of my contract renewal.i requested for the call recording as a proof that i denied the contract renewal they still won't provide that too.