Hung up on by Customer Call Centre.

I made an order on the 1st Nov 2022 with an estimated delivery day of the 5th Nov 2022. Apparently some items where marked as in stock and they were not. They cancelled these items and refunded me credit. I called the call centre because on my side the app gave me a delivery date of the 17th Nov. A lady called Tamara answered, when I was still laying a complaint she dropped the phone. This is unacceptable it's literally her job to assist clients. I want action taken.