Centurion Manager Istore bad attitude on customers

Very bad customer service at centurion Istore, I went there to buy an Apple Watch cash series 7, the trainee by the name of valentine assisted me with very good customer service showed me the variety of watches they have in store, when I was about to pay the watch was no longer available , and I asked to check on the system to check where can I get one, he went to the manager and the store manager was not even interested in assisting me looked at me as we were on the same table , even just to come to me and explain as a store manager how can I get the product I’m looking for, he just let the trainer to handle the situation took his phone passed me like I’m nothing in the shop. This manager in centurion mall he does not have a customer skills does not deserve to serve customers .