FNB the destroyer of innocent people's lives

I keep getting messages from FNB about my account being frozen. I went to Sars they say there's nothing they can do. The only communication they give me is a number which I must call not an email. Now I am threatened about my account being frozen in 2 days. I went to their branch and I was told I must spend my money to call them. Can someone please help. It seems like what FNB wants is makd my life a living hell after this I am moving very things to capitac including my salary until I pay up their credit card then I leave this parasites. I have to take off days and still not get help. Where must I find the money to call. Their ****ty call center as my airtime goes fast the. Moment I call them