Billed for ADSL Line that's not even installed

Im so fed up with telkom,I don't know which way anymore.5 months ago(July 2018)i app**** for a fixed line home ADSL.Till today(21/11/18)I've not received the service or installion even though every month I'd go to the store in Cavendish Square Claremonth to enquire.Everytime its a different story.Last month(October 18)i just had enough and went to the store again to cancel the whole deal(i signed for the uncapped 4meg line)only to be told the told that the line IS ACTIVE yet I have no modem or any technician that came out to install.Then im told the technician WAS at my place but that(The Box) is in someone's yard and this person refused access yet i was NOT informed of this.So i put in a request to cancel the whole damn thing and get my deposit back.The lady did my request at the store and said i will be refunded within 5 working days.Two days later I get a call from head office to confirm the cancellation.But to this day I have NOT received any refund,all this after waiting a month now!!!!Then yesterday(20/11/18)i received an invoice from telkom for my active line ***!!!How can i have an active line if the damn technician was"refused access"to the property where the box is???Yet Telkom DIDN'T even bother to notify me of this,I had to go to the Store and hear this.I've wasted so much airtime even calling their call centre but just get sent from pillar to post every damn time!!!! I absolutely refuse to pay for a damn line i never received!!!! I'll also be taking Telkom to the newspapers to expose their ****ty service as im completely fed up now!!Its going in for 6 months now and still no ADSL.