Vodacom fiber terrible service

Absolutely terrible service I installed the fiber on September 2020, it was never activated but every month I am being charged!!!!! I am so much disappointed with the service. I tell them to cancel the service which also they don’t, I am very frustrated honestly, I don’t feel like paying them because they’re service is honestly terrible, I cannot pay for something that’s not even working! I don’t want to pay Vodacom any further but my cellphone is linked to it that’s why I am afraid they will block my phone and many people have my number.