Poor customer service

I visited truworths Westgate branch. After standing in a long queue one lady asked me stand at the jewellery for payment, she took my items and went to one of the tellers. After standing for few minutes I went to call her and she told me that she is removing the security tags of which she failed to inform me when she took my items. Eventually she came to the till to process the payment and I asked her why did she remove me in that queue because customer who were queuing behind me are already leaving the store, she then said I should go to other tellers and I refused,she told me that when the staff take other customers in the queue 'we complain'

Still puzzled about the statement, who is 'we'? No one pushed me to go to truworths, I went there to get quality items and of course service. Customer etiquette is very essential in a retail store. I can choose to go anywhere but I would not run away because of one I'll mannered staff member. Truworths should train its staff on how to deal with customers. I don't want royal service but I deserve some respect atleast. I do not expect a staff member to pull her face, click her tongue as she did when talking to me. Truworths is not a government department I can stay away if I want to. Pity I didn't get her name but the ID ***