Not a happy customer

Not impressed with the service of studio 88 in waterfall mall in Rustenburg I bought 2 pair of shirts on the 30th and and on the 31st returned the other one as my friend bought me same thing at a different store and printed it. As I understand that no store can have an amount of R1200 in the till in the morning I decided to visit the store around 1pm they said I must come the following day at 2pm as they don't have cash, again I visit the store and same story I even requested an card refund they refuse. Can someone please clarify me on how things work in studio 88 because that's unprofessional