Move Installation booking Dates without reasons

I booked my telkom line installation to be done today 28/09/2015. I received a confirmation sms shortly afterwards to which I had to reply @yes if the information is correct, which I did. On Sunday 27/09/2015 I received another sms to say my installation date is now 26/10/2015 with absolutely no reason for the move given. This is absolutely unacceptable as Telkom insists that it is a whole day appointment from 7.30 - 16:00 as hence I had to take a days leave to be available for installation today. I called the call centre, only to be put on hold and have the phone dropped by 2 separate consultants. The third could not help me or put me in contact with anybody regarding bookings, stating that the computer system does it automatically. I find it hard to believe that there is nobody overseeing this. I am very frustrated with the POOR service from Telkom, and if I could I would go to a different service provider but unfortunately there is nobody else who do telephone lines in our area. Telkom is a JOKE!!!