Waiting to 2 weeks for a call from a staff memeber

I received a call from Telkom contact centre saying that my contract is due for an upgrade would I like to upgrade. I agreed to upgrade my contract but they didn't have the device I wanted but I could go to any store and they will assist me there. I went to Eastgate Telkom on the 27th of October just for them to tell me they must wait for the credit department to approve it, they will call and keep me updated. They haven't done that but sends an sms to say, Dear customer we still awaiting the device and we apologise for the inconvenience. Yesterday the 113th of November I called the contact centre again and they say my contract has been updated but I don't have any device. I go back into the store and I experience the same problem about the credit department having to approve it. So after 2 weeks and 2 visits to the Telkom Eastgate branch I still don't have a device but an upgraded contract. Customer service at its worst, it seems like the contact centre the upgrade department and the stored all have different systems they work on. Very disappointed and disgusted at the level of service at the Eastgate branch even the manager couldn't help. Like really Telkom do you even train your staff before you hire them???????????????????