Northern Tool + Equipment review: VERY BAD SERVICE 4

I RECENTLY TOOK A 8 MONTH OLD PRESSURE WASHER TO NORTHERN TOOL TO HAVE WORKED ON, THE MECHANIC STATED IT NNEDED NEW SEALS AND GASKETS AND A PISTON, THE MANFACTURER STATED IT WAS UNDER WARANTY AND ALL COVERED--COMET PUMPS IS THE MANFACTURER, THEY SENT NORTHERN TOOL ALL THE PARTS FREE TO FIX IT, AFTER OVER A MONTH, THE MECHANIC CALLED ME AND SAID MY PRESSURE WASHER WAS FIXED, I WENT STRAIGHT OVER AND PICKED IT UP, NORTHERN TOOL CHARGED ME $175.00 LABOR FOR SOMETHING THAT WAS COVERED UNDER WARRANTY, I WENT AHEAD AND PAID IT, I GOT HOME AND FOUND OUT THE BATTERY WAS DEAD, I THEN CHARGED IT UP AND FOUND OUT IT HAD NEVER BEEN REPAIRED! I CALLED THE ACTING STORE MANAGER SHANNON-SHE LAUGHED AT ME AND HUNG UP ON ME! THIS IS ON TAPE, I THEN AFTER 4 DAYS WAS FINALLY CALLED BACK BY THE DISTRICT MANAGER, I TOLD HIM I HAD SEVERAL TAPED PHONE CONVERSTAIONS OF HIS EMPLOYEES WAY IN THE WRONG, HE STATED HE DIDNT CARE AND HE WOULD NOT LISTEN TO MY TAPES? I PLAN ON FILING SUIT IN 2 WEEKS IF THIS HAS NOT BEEN TAKEN CARE OF.