Bad service

As a loyal FNB client. I write this review a very dissapointed client. A simple transaction such as reversing an unauthorized debit order takes over 8 days. I tried all platforms including banking app, internet banking, telephonic banking and FNB/RMB private client. The call centre is even worse. They promise without delivering and send you from pillar to post. In actual fact they give you an answer only to dismiss the call. I still don't understand why the call centre is unable to assist with immediate reversal of the debit order since this function has been disabled on other platforms mentioned above. I am dissapointed, stuck and frustrated.