No contact

I have been trying to contact FNB for more than 2 weeks to notify them that my debit date has changed, I've used the chatbot which does not work accurately. I have called numerous times and still no help. Now i have debits being declined and my charges escalating. I have requested callbacks and no one calls. This is unacceptable and this was supposed to be a professional company. I need someone to call me asap *** Natasha