********* behavior

In December 2024, my phone stopped making calls entirely. However, it could still receive calls and sms. This issue extended into January 25, where I decided to call customer care. I was informed that someone had switched my sim bundle to a data bundle of 200gig without my consent. Now this has resulted in more monies being deducted into my account and the issue that my sim is no a data only sim, therefore not only am I being charged far more then I had agreed to, I also can not make any calls. As a small business owner, this is such an inconvenience. This is also *****ulent, as taking money without consent is theft. I made a call to vodacom in the first week of January 2025 and to this day, they have been investigating the matter. Absurd, because I am not connected but I am being debited an increased amount. Can someone please help me!