Advanced Roofing Ontario Ltd

Had my roof reshingled in May 2008. Found shingles flying off over the years, on 3 occasions....called Advanced Roofing....they replaced, but clearly did not do an inspection of the rest of the roof on any of those times. In March 2018, while roof was still under the 10 year "Workmanship Warranty" a large number of shingles, along with a vent, flew off. I called Advanced left a message, plus sent e-mails. No response. I had to spend $700/ to have the missing shingles replaced.