Pathetic customer experience

So i went to Mr Price sports in Cradlestone Mall to purchase goods from my acc on the 27th April... the lady on the till told me the systems were offline to purchase on acc. Bcoz i needed the goods that i had purchased to wear the next day, i asked the cashier if it wilp b ohk 4 me to purchase these goods using my cheque card n come with a receipt another day to get a cash refund n repurchase the same goods using my acc? N the lady said its fine..... Today i went there n got assisted my Tshego (cashier) who wasn't sure of my request and called Joyce(manager) 4 assistence n clarity on my request. Joyce listened to my request n told me it is not possible for me to return my goods n get refunded in cash n repurchase the exact same goods using my account??. Wen i questioned her the reason why? She gave me attitude n tild me it is not the law.. i have had the Mr Price account for many years n i have never missed any installment on been in any erreas for the whole period I've had the acc n now this Joyce is simply making it my problem that their systems were down ... i explained to Joyce that i hav the card that i used to Purchase as the card no appears on the receipt n its in my name n i hav the receipt i got wen i purchased with the clothes codes on it n she still didn't help me n she gave me an attitude above all that... Cradlestone Mr Price is a disaster and that manager Joyce is very bad n has no empathy on clients... after i had waited for 4 mins for someone to come help me pay my purchases as no 1 was there on the tills to assist... it's really ridiculous ... i want the settlement amount of this account i want to close it with immediate effect bcoz Joyce clearly doesnt know what client service means... my contact details are ********** 280