Vodacom contract not being cancelled after countless requests for cancellation

Vodacom is so *****ed, I canceled my contract in August via their call centre, I was told last debit order would be sept, it's Dec and I am still paying. I called them and have received no assistance, it's covid 19, I'm pregnant and too scared to go to their stores. I feel this is an abuse of power, I need someone to assist me and I don't know what to do.