teribble sevice and lack of feedback

On the 10th February I bought a voucher at a BP garage I Midrand and when I got home the voucher was used .<br> <br> Went to the garage the following day ,then called unipin who said they will investigate ,they got back to me saying its prepaid meters .<br> <br> Bought another voucher which worked fine which clearly indicates that the problem is with the voucher.<br> <br> I called again on Thursday spoke to Mohammed who was the supervisor on duty ,he advised he will call back on Friday with feedback and he has not called <br> <br> back since .<br> The call was given to Mxwell who works at prepaid meters and he said ehe would investigate and get back to me .<br> two weeks later ater not hearing a reponse he comes back with the same lame excuse thats does nto resolve anything .<br> im fed up now seriously.these people treat customers like dirt .