FNB turned to a ZOO

I have been unable to access banking App on my device . I called several and the cisultanrs do is call avoidance or pass the bug . I reported this on the 11 September and Nadia Ahmed said she is escalating to Risk , she said I will get Sms with Ref number . I have followed up with her via email,no response . Yesterday I called again Brendon said my line is no clear and I insisted I am in a land line , I can't not be clear .He transferred me to Nosipho who muted the phone for 51 minutes. No one wants to assist clients . I am unable to get mandate approval for any new contract\debits