Purchasing from small business

In February I visited the blue bottle bottle store on Panorama Avenue in Rooihuiskraal there was an error with payment and manager reversed payment immediately. However I was still charged full amount and money was never reversed on my account . I spoke to the vendor and he showed me his receipts and referred me to his bank which is standard bank . When I went to standard bank they told me to go back to vendor. I contacted Ombudsman who told me to go to my bank which is Absa . A dispute was lodged in February we are now approaching may and I am still waiting for a refund. Either standard bank or Vendir is benefiiting I dont know but I am still out of pocket . Be careful when purchasing from small companies