Nedbank employee exposing my credentials

on the 04th December 2015 i was badly and rudely treated by nedbank employee Rebecca Booi. she was assisting me when her friend wearing spurs restaurant uniform entered the bank ,she called her shouting her by name to come and stand next to me ,they then started talking their own things whiles my details where visible in the computer.SHE then printed my papers and asked me to sign.i didn't do my full signature as i was afraid of it being forged.she then said to me cant i see that is not my signature and said she saw my attitude from when i was standing in the queue and it wont take me anywhere,yet when i was in the queue i never said a word to anyone i was patiently waiting to be assisted ...i spoke to her manager who didn't seem interested