REFUND NOT PROCESSED

On Friday the 1st of May I bought a shower door cash, on sat the installer said the door was to big. Not knowing CTM's refund policy, I went back to CTM Sunday to first get a refund. the installer said he would come with me the following Sat to buy the right doorsize. At CTM I was told that they did not have sufficient money on the premises to do a refund but can refund it to my credit card as an alternative. I work in Cape Town CBD so could not very well go back to CTM the next day in the hope that they could do the refund then. They did the refund of which I have proof, but yesterday when I checked nothing still reflected in my credit card. On enquiry from CTM I heard that it can take up to 14 days for Standard Bank to do the refund! How am I suppose to buy a shower door on Sat??? It cost me a fortune in water for my whole family to bath instead of shower. This is absolutely ****************. Where is this R4100? Earning interest somewhere in Standard Bank's coffers? I have all the receipts and proof of refund done by CTM so why on earth can the bank not process this? I won't accept a silly reply that they would attend to my concern and they understand my frustration!!!!!