Poor service at it best

I have banked with FNB for 8 or more years and now I'm not happy with time it take to resolve my cases I was told I open since money was taken off my account right. I was told I take seven working day to resolve the case or get feed back, it has been more then a month still no feed back from FNB side. I'm stuck not knowing what happening. It has to be me who calls them to check if are they doing they and present a case number and still answer a lot question which don't make sense and mind you this will be don't on my cost making my life even more difficult to resolve the issue. When all I want to know why has my case not been resolved. One is on my credit card and it much longer then a month I even canceled the card and ordered I new and it still went through FNB and all that cost me. The second is on my cheque card late December case still now no response from FNB. Honestly calling them is a issue always end up using a lot of air time. Case *** and unfortunately I can't find the second case now there's no way to retrieve it. Sow I need what should do in my case.