cashier abrasive/bad service/attitude

I made a purchase as I always do ... I never try clothes on in store and I never have, limited for time in my profession I keep my account based on its convenient to shop in store and return ..hence, why you have the return policy with swing ticket still attached ... I purchased the goods Friday evening, I didn't even try the clothes on and decided to return them on Saturday and purchase something else (rather obvious I done want them). The cashier took the garments with her to the back to examine the garments, I waited for some time and when confronted I was explained that's procedure... It certainly not ... and when I asked what's wrong with the garments she couldn't answer directly ... This may be a simple scenario however I felt insulted ... based on I couldn't get a response, and when I asked her to remain quiet and rather leave it she continued in an abrasive manner sacral times without just ending it... I was firstly insulted indirectly, secondly attitude and having her last say... shrug off with attitude as she walked away ... I have my Phd I will not be disrespected by any means by a cashier and wish to close my account ... you not doing me a favour serving me...