Appalling service by Bidvest bank OR Tambo

Last year July I exchanged my rands for Chinese yuan at Bidvest bank OR Tambo , the lady who assisted me counted the money on note counter and gave it to me. On my fifth day in China I tried buying from a shop only to be told that I’m using ounterfeit money . Later on that night I went to a testy and three of my notes were rejected , upon arrival at my hotel room I checked all my notes and realized that five of them were actually the same with same code and all. On arrival I went to Bidvest to alert them only for them to say we were ****med . I requested to see a manager and the lady said he is not available until I got on the phone to report the matter then the manager showed up. We requested to see the cameras but that didn’t help as they only showed us a five seconds clip , we left the branch frustrated and to date we never got any refund because they claimed their note counter can only count but can not detect any **** notes.