Telkom is the worst service provider ever

I have app**** for an iPhone 15 contract on the 24th of September 2025. The next day a consultant called me to assist with the application and I was approved the same day. I received the sms that the order was approved. I also approved the mandate on my banking app. Since then it was absolute silence. I can't get in touch with anybody from telkom regarding my order. There is no way to track it. I went online and app**** for a second contract. The sales team phoned me and told me that I can't process another application while the first one is not fulfilled. They can see my order but there is no stock for the iPhone 15 and they don't believe that they will have any stock in the near future. They are unable to assist me with cancelling the previous order or fulfilling it. Now I'm stuck without any communication from Telkom and no phone. Even though they don't have stock of the iPhone 15 they are still advertising the contract and accepting new application. I don't understand how can they advertise and promise a product if they don't even know if they will ever have stock again. I also find their lack of communication infuriating!