2000 MAZDA MX-5 MIATA Electrical Systemignition Problems

I PAID A TOTAL OF $835.03 IN REPAIRS DUE TO UNQUALIFIED MAZDA TECHNICIANS AND INFERIOR PARTS (IGNITION COIL) THAT MAZDA KNOWINGLY INSTALLED IN THE 1999 AND 2000 MIATA?S. IN MAY 2004 MY ENGINE LIGHT WENT ON. I HAD THE SPARK PLUGS AND SPARK PLUG WIRES CHECKED TO DETERMINE IF THAT WAS THE PROBLEM AND THEY WERE FINE. I CALLED THE DEALERSHIP AND EXPLAINED THE SITUATION AND BROUGHT THE MIATA IN FOR SERVICE. I WAS INFORMED BY THE SERVICE DEPARTMENT THAT THERE WAS A P0300 CODE (RANDOM MISFIRE ) AND THAT THE SPARK PLUGS AND SPARK PLUG WIRES NEEDED TO BE CHANGED. I TOLD THE SERVICE CONSULTANT THAT THE PLUGS AND WIRES WERE ALREADY VISUALLY INSPECTED AND DEEMED TO BE IN WORKING ORDER. HE INSISTED THE PLUGS AND WIRES WERE THE ISSUE AND PERFORMED A TUNE-UP FOR 322.24. I HAD TO BRING THE VEHICLE IN THREE MORE TIMES BECAUSE THE ENGINE...