Bad attitude and lack of knowledge

Bad service at Cashbuild Protea Glen, I went there to purchase my building material this morning got bad service at the cashier (Livhuwani Mutswu) as i was paying for the material she gave an attitude while she was transacting, I was paying with my cheque card i saw that the machine she was using was taking long to transact i asked her to cancel she told me she is waiting for a machine to decline i waited close to 10 minutes and the slip came out as a decline but on my phone the money reported that it went out, i asked her on what i was soppose to do on the matter she said she does not know i must go the branch, i went to the branch they gave a statement that showed the money in cash built account i took the statement to her she told me to ask the bank to do a reversal of which i did asked them and they told me that the process of reversing money it will take two weeks of which i cannot wait two weeks for my project to be done, I told her that the branch advised me to come back to cash built to resolve the matter the cashier who was assisting ( Livhuwani Mutswu ) told me that is fine i should wait for two weeks for the reversal she does not know on what to do, Then she walked away while talking to me. Is the kind of service that cashbuild teaches their employees on not knowing on what they are working with ? Cashbuild slogan say we are our service of which i tend to differ, Still waiting for my matter to be resolved no material no money in my account.