Acts to observe when Cancelling contract due to no service rendered

Greetings . My name is Rido . I got into contract with Vodacom home router in 2023 for a period of 3 yrs. A router got connected in Dec 2023 and worked until January 2024. I called customer care and took it to nearby Vodacom shop for repair as advised by agent from customer care. I got new router but it has no connection. We did trouble shoot with agent from customer care but with no success from 18th March todate. I called until my number was blocked for frequent calls . I used fibre dept to get to help. Unfortunately all my efforts are invain. I asked for cancellation now is 3rd week but without respond.The agent told me if i cancel i get charged, i asked when they deduct my money without service who is charging them ? Is Vodacom having more rights than me as a payer?Does Vodacom not part of SA constitution, if it is why Chapter2 sec 10 Human dignity is not observed? I know i have rights to reverse 3 months payment which i paid without services, is this how we are expected to behave as SAns?