Telkom Cancellation and pathetic service

I had a buisness ADSL and phone line with Telkom in an area called Hopefield. My buisness moved to Saldanha Bay and i jumped through all the hoops to cancel the Hopefield Line as requested by Telkom. That was 2 October 2017. We called them to confirm receipt of the cancellation and was assured that it would be done. More than one year later we have now recieved confirmation of the cancellation after paying for R750 per month for a service which we dont have. They have assured us that they will refund us but know one can tell uss when this refund will happen. Everytime i enquire about this I miraculously get cut off after been put on hold. They also do not send me my invoice for and then without notification cut my current line. They then charge me for reconecting my current line as well as the supposed cancelled line. They tell me i need to pay it otherwise my line will be cut. Yet no one can tell me whats happening with the thousand of rands refund they owe me. PLEASE Help