insulting our integrity and no willingness to help

On 14/02/2016. The Manager (Muneer) and assistant (Melissa) refused to exchange a denim shirt for other goods of the same value. (R200). Muneer insulted our integrity by telling me in front of other clients that \he will never exchange the denim shirt, because he can see that the shirt had been washed\" and \"that the tag had been tampered with\". How disgusting for a so called manager to tell something like that to me, and I know a fact, it's not the truth. Funny enough, when I went to go check the other shirts on the floor, they were tagged the same way as our shirt. I don't know what is Muneer and Melissa's case with us? We demand a refund of R200 for the shirt and R100 compensation for waste of petrol. I also want a letter of apology from both of them, Co 'signed by their regional manager. "