Unacceptable

I was advised the first day when calling into the call center that it will take a max of 3 days to upgrade my line. Now a week down the line it still has not been done. I've been emailing every second day to follow up but i response i keep getting is that they will get back to me but to date i have received no feedback i'm just told its in process now all of a sudden i get an sms from telkom that they will come on Tuesday the 9th to do line upgrade installation no arrangements were made with me in this regard or advised by VOX i am working and can not just stay at home on such short notice this is totally unacceptable!! i want a manger to give me and call and explain this to me NOW as your call center is also not reachable.