MOney to be paid back

It is really sad to think that our local Pick 'n Pay in Meyerton that we support on a daily base is really giving bad service when coming to refunding money. I drew Money by the teller to be informed that it was declined after trying for a second time and still declined I decided to go to the ATM just to notice money did go through, I went straight back in to informed the floor supervisor and showed the statement as well as SMS from the bank, I was informed to come back the following day as the bank would reverse it the following day I went back again with no luck ! I was then asked to wait till Monday as it may take a few day days this happened on the 10March 2018 the Monday I returned back just to hear another story about no the bank will reverse it and, and with much embarrassment and feeling very un helped I said I will wait after a few days I retuned then again I was told they now need a copy of the bank statement its very Embarrassing every time having to return to the store having to explain and speak in front of other customers, its now almost a month later and this is still not rectified what if that money was the last money we had for the month ? this is really pathetic.