Over charged account

Good day. We have notice that we have been charged for a router that was not signed by me, i do not have the router neither did i sign for the amount to be debited from my account. the amount has been debited from my account since September 2018, i did contact telkom customer services and they said to open a ********** case i had to fill in an affidavit and then go to the nearest telkom. I have been to Telkom Shelly Beach in October 2018 and reported it, the sales guy has logged a dispute since then i have had no feedback from Telkom Head office,Telkom head office has asked for a router from me which i do not have!!! I do keep in touch with the sales guy there but he keeps on saying that there is no feedback regarding this matter, all i want is a refund from Telkom, if i do not receive a refund in the next week from Telkom i will be handing this matter to my attorneys.