Shocking service

I was at Jet today around 16:00 to exchange a t-shirt I bought last week, one of the cashiers was trying to assist me when her till logged off. I waited for about 4 minutes and then she had to transfer me to one of the other tills. The lady I was transferred to firstly had an attitude, she told me to wait because she had already asked another customer to come to her till. I refused because I got to her till first and I had already waited for over 5 minutes at the other cashier's till. Eventually she assisted me, whilst processing my refund she wanted to refund back to my cheque card. I told her that I wanted cash because that is a cheque card not a credit card. She told me I cant tell her where she should refund the money its up to Jet to decide! I then told her that I have been to Edgars and they have never had problem with that, she further told me that this is Jet not Edgars. I fail to understand how can I be told how I want my money back, to top it all I asked for her name when I was leaving and she just gave me a dirty look. I am actually shaken by the horrible service I got just to for a refund!! The cahier's name on the till slip is K****tso Sebati