Illegal Deduction

On 21 October we received invoice SBINV0428447 for R 1,998.00. Stating WiFi and Fiber. I would like to know how are you charging for fiber if it is not connected. You better refund my husband's bank account or I will be taking further action because you are charging me for a service that I am not using. We have the wifi of R999 per month. You need to sort out your accounts department as this is unlawful and unethical