Call center and Customer care sucks

Nedbank is the worst I left a complaint for them via email that there call center took over a half an hour to answer my call. It took them 2 days to get back to me about the complaint. Then when I did get a call from them the guy said he is going to follow up and call me back nearly 2 days again and I have heard nothing.

I am very sure FNB will help me out a lot better then Nedbank