MOVING LANDLINE & ADSL (ORDER ***)

I called Telkom last week to advise them that I am moving house on 12 March 2016. First I was given incorrect information about my package by the call centre agent. After a long protracted time, she realised I had the Telkom Simple package. I was then informed that my line would be terminated on 11 March 2016 at midnight and that Telkom would send me an sms to let me know when they could install my line at my new address. I then received an sms from Telkom stating that my installation order is scheduled for 11 March 2016! I am only moving on 12 March 2016 as explained very clearly on the phone to Telkom. I cannot reschedule online - it doesn't work - and when I called Telkom and waited on the line for 20 minutes I was cut off and then I called again and spoke to an extremely rude agent who cut me off again!!! Please advise me how I can get some decent customer service fro Telkom and a date that makes logical sense!!!