Bad customer service and uns****ed staff

I sent someone to buy me a bag because I had dinner on Thursday,however I got the bag late and it was not what I wanted so I decided to take it back,when I got there I was told that they can't refund me immediately because they don't have cash so I was asked to leave the bag and will be contacted for my refund,so as I was busy with my shopping I got a call from the store asking me who bought the bag for me of which I feel it was not necessary because it bought cash I told them I sent someone and I was told to tell the person that bought the bag to come in so that they can refund them I told them it won't be possible because the person I sent is in Cape Town,after a few minutes I got another call from the shop telling me that the Mager who was not on duty says that I cannot be refunded,so I asked Shady the lady that works there to give me back the bag and she said she can't I have to return to shop on Monday after explaining to her that I'm a very busy person and I can't go to menlyn during the week but still she refused to give me the bag,so I ended up leaving the shop without both,the refund and the bag,I'm not happy with the service I got from the Shady and Manager,they were both Rude unprofessional,Pringle is a big brand you can't be giving such a poor service and for that I read the terms and conditions of their exchange and refunds and there's no part were it says we can't send people to buy us stuff,I mean of us are very busy but we have people that can actually run our errands while we busy with better things and what made ****ed off the most is that Shady told me that it was going to be easy for me to get my refund had I used a credit card,well not everyone has a credit card and besides I had sent someone to buy me the bag so there was no way I was going to give them my bank.your service is poor I still say,you need to improve and start putting your customers first.