Vodacom should go down!

Seems like the only way to get any response from vodacom is through leaving bad reviews. This is my second time battling with the same problem with vodacom. I had 2 contracts with vodacom, can read my other review about the first contract, now with the second contract it is the same issue but with some changes. They don't inform you that your contract is done, they just renew it monthly and debit you without consulting with you. Is that not theft? We had an agreement for 24 months and no longer. Yet they just continue to debit you after the contract expired. If i call customer care, they say they can't help me as i am not using a vodacom number, if i whatsapp them, i get the same response, if i email them, they say the service was moved to Tobi support channels, if i use Tobi support channels, they say they cant help me at the moment. So what am i supposed to do? Should i take legal action? I don't want to but why must it always be an issue with expired contracts?