Very bad services

I am Marilyn Ayer and I have an account with FNB, ********** 0855. I made a ***** case (****) with FNB on the 19 October 2018. On the 20 October I cancelled the case due to misunderstandings between the two parties. We sort everything out. I went to the police station to make an Affit Davit. Up till now there is no feedback. I called FNB for the last two weeks all the consultant told me it takes 48 working hours that is six days, other times they told me it takes 5-10 days. My case was never assigned to an investigator. I called Friday 26 October 2018 and the consultant Prudence Mathibe told me to email the Affit Davit to her and she will forward it to her team leader. I called yesterday again and was told by Prudence it will take up to three months. The team leader never assigned an investigator to the case. I need help urgently because the other party account has been blocked for nearly three weeks. He is also a client from FNB. He called every day and want to know if the account has been unblocked. He is a business man and he can't do anything now. FNB have very bad service. with other banks you don't wait so long because I had experiences with them. This show that FNB is very bad and their service is terrible. They don't worry about their clients at all. I need help so they can unblocked the following account. ********** 0821. Your help will be highly appreciated.