HUMILIATED IN BANK

I went to draw a large sum of money gave teller my ID book and signature and she took it for authorisation she returned to say my signature doesnt correspond with their records i showed her it is the same as on my bank card and all my other cards, was then asked if I dont have a drivers licence as my ID pic wasnt acceptable either. Finally the branch manager comes out and says i have to answer a random list of questions about my accounts to prove who i am, this was all done in front of a lunch time, month end queue of people, i refused and demanded to speak to her in private. almost two hours after i walked into the bank she still didnt believe who i was, finally showed me on her computer what they were using to compare my signature to, it was a document i initialed when i opened my account to confirm i understand the terms and conditions of the bank, it was clearly not my full signature. when i pointed that out she said non chalantly oh ok I see now, sorry bout that and issued the money and asked if i dont want to upgrade my account. I guess treating your customers like ********* is the norm Standard Bank.....i will definitely be looking for another bank if that is the case.