Annoyed Vodacom Client

I have a data contract with Vodacom and opted to use a router instead of using the sim in a phone as I only need it for data purposes. So I discovered that theres subscriptions linked to that number and I was confused. So I then called customer service and the consultant was so unhelpful and insinuated that I subscribed. I then explained calmly that the sim is always in a router so how can I possibly subscribe she said online and on the vodacom app I said no I dont have the app and I'm the only one who uses the data and I dont click on unfami**** links or subscribe to anything online she then said she doesnt know. Me being annoyed I dropped the call. She didnt want to help, she didnt listen to me and she just said she doesnt know which is very shocking, because if you dont know you ask or escalate. I just really want this subscriptions story sorted out cause i cant be billed for something I didnt do and how is it possible.