Upgrades - obtaining new devices

I have been due for an upgarde on my cellphone since July 2015 and my tablet since December. I have visited stores at Menlyn and Woodlands to upgarde both devices and was told there is no stock. I require a new tablet urgently and therefore placed an order for an Apple iPad Air 2 and a Samsung Galaxy A3 at the Woodlands branch at the beginning of January 2016. I have received no feedback regarding my upgarde. I visited the store and was told that there is still no stock. I have tried contacting the call centre and I seem to have no way to communicate with telkom on the status of my upgarde. I have been trying to upgrade since November 2015. I am highly disappointed with the appalling service as I have been a loyal Telkom mobile customer for almost 5 years now. Should I not receive these devices soon I will have to cancel my contracts and switch to a different service provider.