POOR SERVICE FROM TELKOM MOBILE!!!

I am extremely disappointed in the service received from Telkom mobile. I have been due for an upgrade for the last 4 months. I received multiple calls offering me phones which I was simply not interested in; I specifically was looking for an iPhone as I currently have one and would prefer to stick with the brand. I was advised that they had no stock. I then requested that they only call me when they had the iPhone I wanted in stock. 4 weeks ago, I then received a call advising me that they had, and I quote, "just received stock of the iPhone SE". I jumped on the opportunity and completed a 45 min call to process my upgrade accordingly. I was promised my phone would be delivered in 4 to 7 working days. I have yet to receive it!!! Since then I have received 3 calls from the upgrade department advising me that I am due for an upgrade. By the third phonecall I had had it!!! I was helped by a call centre agent named Tyler who was extremely helpful and who didn't just put the phone down on me; he advised me that my upgrade was never processed on the system and that they had no iPhones in stock again. WHAT THE HELL MAN???!!! I was told I would receive a follow up call by all the agents I spoke to, yet none of them have called me back. I am so disappointed and this has been a complete time waster!!!