The cruelty of Vodacom

My employment contract ended on the 31st July 2021. Fortunately, my data sim card contracts ended in November 2021. I requested Vodacom to cancel my contracts, so I can pay the outstanding amounts and cancel the two contracts that I can't afford. Debt collection department, told me that they can't cancel the account that's in arrears. I tried to explain that I'm unemployed and the best they can do for me, it's to cancel the contracts and stop billing me. As it stands, Vodacom it's still billing me on monthly basis, and it is becoming unbearable for me because I paid R2000 this month, but I still need to find R3000 for Vodacom to consider my request. Please have mercy, and help me to cancel those two contracts.