Bad Service

I paid money into an incorrect FNB bank account through my app. I realized my mistake and called FNB within 2min. I requested that they reverse the amount immediately, as I realized my mistake and need it fixed, since this is an FNB account. On the call the assured me that if it is an FNB account, they can access it, if there are negative service fees, it will still be reversed. They just need the client's permission. To my surprise I receive an email that it was unsuccessful due to insufficient funds. I am deeply disappointed! I have other banks calling me nono-stop to move my accounts. If this is the service that I get, i am moving! You completely dismissed my request, reason, action, and the fact that I have been a LOYAL client for many years. Thank you for making me just another number!!!