Telkom - appalling way in which to treat your customers

In June my mother's telephone line was unfortunately cut by some water subcontractors in the area and Telkom told us they would not be repairing the line. We ordered an FLLA line (wireless phone) and asked Telkom to migrate the line for her. In August they delivered a router to her home - the wrong product. After numerous calls, they said they would collect the wrong device and deliver the correct product and that the line was being migrated - this was on 13 September (ref no: 341 969). Nothing has happened since. My mother received a bill this month billing her for the router! I find this really cheeky - how can Telkom send a bill for a product not ordered and not being used. I called Telkom today (( October) and was told the same story - they haven't received feedback from the back office. No notes have been saved that the wrong device was collected. If I am not happy then we must cancel the line. What type of service is this? It is shocking and unacceptable. Going on for 4 months now - no line, no service and an outrageous bill. This is an appalling way in which to treat loyal paying customers.