FNB - horrible bank and horrible deceased and Fiduciary department!

I am appalled by the level of service from FNB. I hope that this complaint goes public; maybe then I will be able to get the help I need from them that I have been requesting for months! The principal of my son's playschool passed away, and a new company has taken over. One month, I accidentally paid the fees into the deceased's account. Now I am trying to get my money back. First they asked to get the deceased's ID information. I have no relation to the deceased whatsoever! However, through much difficulty, I managed to get it. I email it to them, and they don't respond. A month goes by and nothing. Then when I make new queries, I get an email saying I have to contact the executor of the estate! I have no relation to the person who passed away! How am I supposed to get this information??? I just want my money back. I absolutely despise FNB and will definitely NOT recommend them to anyone wanting to change bank accounts. Their service is awful; they don't respond to emails and seem to just not want to help at all.