CONTRACT NUMBER CHANGE

Took out a contract at the Telkom Store on the 23rd of November and requested for my number to be converted to prepaid and the benefit for the new contract to be loaded on a new sim card. At the store they advised I need to call the call center and log a case as they unable to do it on their side, they no longer have the facility. Fine I called on the 30th of November for the call center to log a case for me as said by the store, which they did log it for me. They advised my case will be attended to within 72 working hours. Of which I called last week Thursday 5th December to check status of the case, only to find my case has not been attended to. Call again today spoke to Mukelisiwe who told me a wrong case was logged for me. A case was not supposed to be logged but I was supposed to contact the sales department. 1stly - they do not update you as a client what is happening with your case, you have to continuously call them and request for feedback. Eventually the lady transferred me to the sales department of which the call does not go through, it's just silent with no ring tone or any sound. Such a pathetic service for such a huge company. If there is anyone who can assist, what to do. And how to go about.