Cases not resolved

I'm so disappointed with FNB. I logged two dispute regarding ***** on my cheque account but till today. Nothing has been resolved. The first one I opened a case at a branch and they made me call the call center and I sent everything they asked too via the agent at the branch and then I received an sms that my case was unsuccessful and I needed to reopen it. Then yesterday money was deducted again from my account. I had to use my airtime and had to be on hold twice for 15 minutes before I go through. I spoke to an agent who told me he opened the case and I didn't even get an response until today. I opened both cases yesterday and nothing. Today I decided to call and follow up and guess what, I was on hold for 22 minutes until my airtime was finished and cut off. I'm so disappointed and my cases are still not resolved. No response or anything whatsoever.