Telkom not delivering as per adverts

I have ordered the 10mb ADSL special from Telkom on the 12 June 2018. Received a call from the sales department and all was sorted, i.e taking details etc. I was sent a message to pay a deposit which I did the very same day. After daily phone calls and numerous emails I was informed the technician is booked eventually for the 18th July 2018 - that day came and no technician. The following day another call and was informed that the technician is on his way. Technician came and then informed us that the infrastructure was not adequate, there is a 4 mb line and not a 10 mb line - he needs to order one. Then the story changed to there are no more "empty" numbers available on the exchange to allocate a number to my house. Today another phone call and I was informed by the telkom employee that I need to phone constantly to check up on my order as they do not give customers any feedback or status. How is this possible that clients get sent from pillar to post without receiving the service?