Installation that never happened

I have been struggling with Telkom's customer care for two weeks just to change the address of installation from my old residence where I had an ADSL line 2 years back to my new residence for a new ADSL installation. I have spent more than 3-4 hours on the phone trying to change the address. After every time they promise me that it is now correct and hunky dory. One day afterwards i get an SMS stating installation at the wrong adress and I have to call Telkom and redo everything again. This has been done 9 times over the course of two weeks. Including talks with two supervisors promising me installation on the 31st March 2016 at the correct address. And on the day of installation, the Technician calls and low and behold he has the wrong address, and is unwilling to come to the right address as i have asked them to change it to. I took off from work to be at home for installation, and nobody came. Even after trying to get them out to my premises on the day spending 2 hours on the phone with 8 calls, I still have not had any feedback from Telkom to this day. I cannot understand how stupid you have to be to not understand that the address has changed. Ref No: *****3 & ***A