Windscreen

PG Glass replaced my windscreen which I needed to take back cause of wind noise, 3 days after they resealed the windscreen I left for Klerksdorp, on my way not even half way one of my roof strips came off, now they recon they did not work there but I mean the strip and the corner of the windscreen is like almost together, lastly I've had the car for 21 years and now this, really just after they work on my car and now they denying it