Where do i start?

I don't even know where to start. I have been banking with Absa for nearly 10 years and the customer service has been terrible. I have had duplicate transactions go off my account with a 4 week resolution time and speaking to over 12 consultants - i had to go into the branch and escalate this. I have asked if upgrading my account would mean i get a banker to assist me as a professional and have been told you have to call in each time to get a different banker and there is no big benefits to upgrading. As of recent, i have app**** for pre-qualification of a home loan 2 weeks ago with a deposit and did not have anyone contact me or be assigned a consultant. I recently got approved for the home loan and still up to today have not had any contact. When i called to follow up, i was given attitude. All the other banks have someone that i am dealing with directly and actually care for people. I am also considering moving over as they are offering a better rate with more benefits. I don't understand why ABSA does not care for their customers. It's complete attitude all the time and it's always someone new that i have to explain my story to multiple times. Why do you not care for your clients?