On the 01/1/2023 I received a bank notification that says vodacom deducted R1900 on my account which I am not aware of

On the 01/1/2023 I received a bank notification that says vodacom deducted R1900 on my account which I am not aware of. I went to their office to query about it, all to find out the was a ***** done under my name. They haven't given me any feedback regarding this matter and it's more than 14 days now. This ***** is messing up with my credit score