Poor and neglected service from fnb ***** dept

I am a long term personal and business banker with fnb and I could believe the service I received. I have a premier account and recently opened a business account thinking I will be looked after as a client however I call the ***** dept a spoke to sinvkear Joseph and explain the ***** that happened he then assist to received only 1 amount and blocked app access.. Business and premier account from 10 January 2022.i awaited his call but no response yet. Yesterday I call from branch in durban 4 times and Sphe mhlongo from ***** promised to text him but still no response. Please help as I need access to my account other wise I loose business.