One Stop Market 6

Review: I bought gas at the One Stop Market #6. The receipt states 'GOLD' gas - pump 4. The octane rating listed 93. However, upon filling up my car my oxygen sensors went off indicating that the gas was of a lower octane level. I contacted the business and received the phone number for main office and where where the owner was located - which was at One Stop Market #1 - phone number ###-###-####. However when I called One Stop Market #1 and told the person who answered the phone what the nature of my call was concerning he told me the owner was not there and could not be reached then hung up on me.The owner's name is Atul Patel. I would appreciate investigation into fuel labeling as I believe they are selling a lower grade fuel at premium prices.Desired Settlement: I would appreciate investigation into fuel labeling as I believe they are selling a lower grade fuel at premium prices. I also would expect a refund for the amount of $29.87 which is the purchase price on my receipt.