FNB Bryanston is the rudest and most unhelpful FNB branch in the country

I have never felt so helpless when my mother phoned me to tell me that my account number I gave her to deposit funds into, does not exist. She went to FNB Bryanston branch to deposit funds into my Premier Select account, number starting with 5236 and was told by the teller, without the teller checking or enquiring, that this is not an FNB account number as they do not have account numbers starting with 52, only 53, etc. Subsequently my mother phoned me to tell me this and I know that my account number is correct. I asked her to go back into the branch and deposit again and to phone me once she is at the teller so that I can speak to them. Absolute rudeness of the teller and when I phoned my mom while she was inside the branch, the teller refused to speak to me and refused point blank to assist my mother - the account number does not exist - REALLY!!!! I contacted my private banker, who assured me that my account number was correct and that my account exists and was given the branch telephone number - to no avail. They do not even have the decency to answer their phones inside the branch. I expect an apology from the branch manager and the teller who refused to assist my mother and take the deposit and sent her out without her being able to deposit into my bank account. My mother is 76 years old and cannot be pushed from pillar to post just because of incompetence on the part of the Bryanston FNB branch