Banking app not working

My cellphone banking app stopped working on Saturday. This morning I went to one of their branches to enquire what happened. The lady that assisted me told me to open the app, it couldn't open. She uninstalled and installed it again, it still could not open. She then told me they can't do anything about it. I'm not happy because she didn't call the head office to ask whats another alternative that could be done or when this happens, whats the next move. I use Capitec as my main bank, my salary is deposited there. If I can't access the app, how will I do my monthly duties ? How can I trust them with my money when they can't help me have access ? Chances are I won't be able to even see transactions going in and out of the account. I am taking my money to another bank. Capitec is *************.