Telkom billing for service not delivered

In February I was contacted by a Telkom agent asking if I would like to receive a faster internet connection. I initially did not agree because she said it would be R499 per month. Then she said it would only cost aR100 a month more. I received a call in March from a courier asking me to quote a reference number for them to deliver the new equipment. I did not have a reference number so they said I must contact Telkom. I have contacted them by email and telephonically and have still not received this from Telkom. I agent told me they would deliver it to my work. That was in the last week of April. I have been charged for this service which I do not have from March. At this stage I do not want this service because of the poor response and I want to be refunded the money owing to me. I have heard that someone is still waiting to be refunded after 6 months for a service that he had cancelled.