Unresponsive apps, unresponsive personnel

I've reported issues with FNB banking App on the 11th of November 2023, and after a response from FNB I've mailed them my contact details. Though to this day I've yet to receive any communication from FNB. I've also opted out of all marketing options, yet FNB still shoves their promotions on me using either email or when I open the app. This is quite annoying. Furthermore, the FNB App no longer functions properly when you don't have data. Usually I could log in without data and then buy data. Now when you connect without data the app goes into an unresponsive state.