****py service

i bought two trackpants at ackermans Van brandis street in Joburg, i wore one but i realized that the elastic was too loose but i lost the slip. i went to ackermans to return it and take something else instead as i lost the slip, mind you the trackpants still had a tag on it. The guy by the name of Teboho blatantly told me that they will not assist me as i do not have a slip, how sure are they that i didnt ***** the tranckpants and now came to change it to something i prefer. I asked to speak to the store manager and he said she's not it, i then asked for th emanager's name and surname and he blatantly said he will not tell me , and wont give me his surname as well . As per the NCA a client has a right to change the item whether the slip is present or not, so what makes Ackerman Van Brandis street special from other shops??????????????