appalling customer service

I am really appalled by the manner in which I was treated by this young lady, who gave me a sticking attitude when I questioned why do you need the card of the account holder to do an exchange.And started shouting at me.<br> <br> can you please send her for customer service training or she must not attend to customer and pack at the back. the last straw is when she said to me ' Dear please move aside so that I help other customers' I told her I am not dear.<br> <br> and she gave me a long senseless explanation.and please show her this \dear"by itself conveys sarcasm ( that is what she called me and I do not have any relations to her ) I would like an apology from her and what disciplinary procedure's will be taken against her"