A & L Automotive

On July 9th, 2015 I took my 98 Nissan Pathfinder because the check engine light went on. I was given an estimate by A & L Automotive and was assured that after the repair the light would go off and that my vehicle would pass smog. When I received the vehicle back the light was still on and they gave me a smog certificate which I don't understand how they did that. When I took my vehicle back to the shop because of the light being back on they wanted to charge me another $277 for the repair even though they had assured me that the vehicle would be fixed the first time. I paid them $577 for a repair that to me is unsatisfactory and it is also unacceptable that they want to charge me again for something that should have been fixed at the beginning. I have the receipt from the first repair. They keep telling me that it could be this or that.Desired SettlementI would either like for the business to fix my vehicle like promised or I would like a refund so I can take my vehicle to get repaired elsewhere.