Worst retail experience ever...!!!

Well today I found out that you can open up an account with Cotton On a shop I love. So I app**** online and received an email and SMS saying I was approved. I needed my ID which was at home, so went straight home after work to pick it up at which point my wife and kids tagged along. Got to Cotton On waited in line to give my ID and get my card. When I got to the front, the women had no idea what to do. Eventually, she called the call center and we waited, and waited and waited further. We waited so long I considered leaving the store and just leaving the application, I'm a very patient guy but waiting over 30 minutes is a bit to much. Anyway, I eventually got to speak to the women on the phone confirmed my details and which point the cashier had no idea what the fax number was as the call center wanted to fax the papers through. I had to wait for another staff member to go and find out what the fax number was. They eventually managed to confirm the fax number at which point I had to wait even longer for the fax to come through. We waited, and waited and waited, each and every minute that passed I considered pulling out and going home. The cashier then told me to walk around so long till they called me which they did after 15 minutes, maybe a bit less. Signed the contract and got my card. Had my two year old son with me who waited the whole time as well and who was pretty bored and annoyed making my experience even worse. But hey, I bought a few things just under 2k worth of clothes and get home to find out that I wasnt even given my R100 off.... !! common now, man... Worst experience at Cotton On ever. You guys should really look into making the process much smoother and not inconvenience the customer as much as I was today, at no point did anyone apologies, not even a simple sorry.. great service hey. Never going there again.....