Appaling customer service

Good day

I bought a track pants at the start of May at your Canal walk branch as I work near there. A few days later I tried it on & found out it was too small. I then went back the next day to see if they had a bigger size, unfortunately they did not. The assistant then told me that they will get in more, but couldn't specify when. I went a couple of times a week to check if they got more stock in, but they still had not received anything. I also checked your Parow & Zevenwacht Mall branches, they also did not have the size I was looking for. Towards the end of May, I went back to your Canal walk branch & asked them to checked who's got stock of the larger size, which they said the Golden Acre branch had. I then went to your Golden acre branch & sure enough they had a larger size which I was looking for. I then asked the manager, MacNeil, if I could swop it around for a large. He point blank told me no as I did not have a slip, asked me how I bought it and told me I must take it back to where I bought it for a refund. I was taken aback by his comment & felt insulted as I'm sure he probably imp**** that I stole it. I'm a regular customer of Exact & I have never experienced this kind of customer service. I also work in the retail industry as a manager & was quite shocked at his response. A fellow customer also asked him just to exchange it, it was a straight swop for the same garment & he still said no. Nevertheless I left disgusted & will never put my foot in a Exact store again if this is how your managers treat their customers & I will inform all my friends & colleagues about this experience. I wasted my money on getting to town only to be insulted like that. Furthermore I sent a private message to your facebook page, guess what still waiting on a response as it has been read. Tfg still got a lot to learn when it comes to customer service, its absolutely appaling!!!