Van Chevrolet, 8585 E Frank Lloyd Wright Blvd, Scottsdale, AZ 85260 Changed spark plugs in my 2007 Vin 3GCEC13JX7G535530 and ruined cylinder #8 Scottsdale Arizona

An engine check light came on 1st time 12/01/2020. I went to nearest store - Brakemaster.  They checked with their  meter and said it might be the gas cap because of age.  Got a new one and store replaced it for me with proper vin # etc. 

Everything fine until 12/13/2020. This time my son checked with his meter.  Showed #8 cylinder is misfirimg. I took vehicle to mechanic in Anthem, not telling what my son found.  Mechanic said the #8 cylinder was misfiring.  When did I last get sparks plugs changed? The #8 spark plug only had two threads inserted and were strippped. I said they had never been changed, I thought. 

Went home and found all paper work on my vehicle and found that the plugs had been changed at Van Chevrolet where I purchase it,  05/26/2020.  My proof positive damage is documented by Van Chevrolet.  No one else had been near the engine except for oil changes. He said that other cylinders  and many wires were burned.  Ya, Right!!!!! 

The man at Van  denied the paperwork, the job, was extremely rude, refused me access to the General Manager.  He shouted while thumping his chest, said he was the only one I was permitted to speak with.  He had the audacity to tell me I had to pay in excess of three thousand dollars to repair.  I told him not me - it is your error - you have to pay for your  irresponsible or fraudulent errors. 

What an outrageous tale he spun. I wrote Corporate in Detroit, - No answer! They sent info to Van and they phoned me.  You are right, I refused the woman. 

Please, I implore you - never go to Van Chevrolet.  Use Courtesy Chevrolet.  They are honest, professional, courteous, and helpful.  Thank you for your attention.