Poor service and communication

After waiting 4 months I Fibre is now installed. to my surprise, I got a bill yesterday for R 1,962.22 I called Vodacom this morning the lady I interacted with told me she cannot assist me since my account is a business account. She offered to connect me to the business department which was not successful after a long wait. When she tried to reconnect with me again the phone rang for a long time and the connection got cut.

All I need is an explanation as I was told that I will not be charged for both interim solution and fibre at the same time