Please HELP!

I’m am so frustrated🤦🏽♀️ 2 years ago I asked someone to take out a contract for me and that contract was ending in June this year. It was for a mobile router with 80G monthly… Just before the contract was due to end they called that person for an upgrade and they agreed on my behalf🤦🏽♀️ And that’s when the nightmare began. My sim card for the router stopped working and I assumed it was due to the contract lapsing. They sent me the sim card for the new upgrade only to find that the sim card is for a home wifi🤦🏽♀️ So it did not work when I inserted it into my small mobile router. I called and counselled and all seemed well but now i can see i am still being debited even though my old sim card stopped working and even the new sim they sent isn’t working. @Vodacom I really don’t know what to do now. I have no working sim card for the wifi yet you guys still debit me.