How does Discovery Bank survive

I have been trying to open an investment account for 3 weeks now. The call centre helped me download the app and do all the necessary things. App tells me that congratulations your application has been submitted. We will notify you when your account is open. Seems easy enough. I have now phoned the call centre about 7 times to try and find out when my account will be open. Each person tells me a different story. How can a bank with this type of service. Just wish someone would call me as it is costing me a fortune every time Carol