Poor service

I opened account with capitec using my passport in 2015 and I have been using it regularly as my main account. This month home Affairs issued me with a ID book based on my permanent residence. Last Sunday I phoned capitec to update my details from passport to ID number and lady consultant asked me to go to nearest branch with passport and ID book. When I went there the lady consultant adviced me to close my current account and open a new account with new account number and change my debit order, salary deposit details and everything which was shocking and ridiculous. I just did update with my other banks and they did it gladly. Why capitec just cant update my passport number to ID number like other banks? Dont they care about clients convenience? What will happen to my debit orders, cards, salary deposits and most importantly credit history? Why they dont prefer easy step than making clients life miserable? Very disappointing and reminding me of old 90 era's poor technology. Come capitec come, Get prosper and dont advise clients differently over phone and personally. Like your staff clients time is also valuable. Hope you will sort this out for me and for future foreign clients also, Regards,