As long as it is not the price indicated on the tag, or the 10% discount enjoyed by VIPs, everything else should be considered a special price. It makes no sense to not return or exchange special offers. This is probably what the salesperson tells you because he is afraid of affecting your performance. Clothing can be returned at McKellar as long as the tags are not cut, there is an invoice, and it has not been washed and does not affect secondary sales. The time will be approximately within a month.
The return process is to go directly to the counter with the goods and invoice to see the salesperson. If the salesperson cannot handle it, you can go to the customer service on the third floor or find the person in charge of the floor.