Refund not paid & bad attitude of suppervisors

On the 6th of the current month I made a card payment at till. 4 but after the machine instructed to remove a card I did so and immidietly the shop system cut off. With all patience I waited for things to come back to normal and with attitude the first supervisor told me that it's my problem of which that can not be able to assist me unless I go to the bank to get them my bank statement so as to proove that the amount paid went through. I stopped her and told her that with her attitude we must compromise for each other for I understood that a big company like pick n pay should have a backup for such incidents. But the second supervisor was called and she asked me in a good manner that if I can catch the bank statement maybe they can assist me. With all respect and patience I did so. I gave her what she wanted but problem was that she said me wait for sometime while I was not even sure how far she was with helping me, only to find that at the same time she was assisting another casheir while I'm waiting and have been waiting for long. They called another suppervisor of which she did not even attempted to help. I asked for the manager who also asked for the bank statement and my numbers of which a give to him. But with him I'm sorry to say that he seam to do not have respect for customers because he was anoyed by the fact that I took a pen and write down my numbers as he requested so he take it that I want to make myself difficult because after so much frustration and embarrassment in front of everyone I told him that I no longer need what I had bought and only want my refund. I was asked by the same manager to take the groceries of which I also took it that he was now forcing me to take the staff that I menssioned I don't need anymore. He told me that they were going to reconcile their bankings with my payment to make sure that I've paid them. He promised to call me the next day and they did. They told me to come and get the groceries now that they have setisfied themselves that my payment of a mear R82,05 has been paid. I don't them that as they had asked for my baking details through a bank statement I think it will be wise for them to deposit that money to the bank because I'm not staying next to the shop so it cost me to get to their shop of which they can't take the cost as the problem of the system shutdown was theirs not mine not the bank. And mind you that due to being sensitive to stress that was caused by bieng taken up and down I left some of the stuff which I had paid cash for and was in the same bag as the ones I had a problem with. I had paid at till 5 for the other stuff as it was not affected by the shuttdown. There for till this time I lastly heard from picknpay when they promised that they will get back to me with the issue of depositing my refund. So can you please assist me.