Canon EOS R7 Mirrorless Camera with 18-150mm Lens and Audio Recording Kit

I've had the WORST experience of my life with Canon service. My R7 camera started showing an error 70 sign, and i sent it back for repair since it was still under warranty (less than a year since i bought it in ). Canon acknowledge the receipt of the camera and sent me an estimate for 0.00 since it was still under warranty. Seconds later i received another mail with an estimate of €389.00. When i called to figure out why were they charging me this money they apologized and said it was 0.00 but that they can't repair the camera nor substitute it because it has corrosion. They sent 3 photos supposedly from my camera.When i bought this camera it was advertised as weather sealed, how could it get such corrosion in ten months of use??? Everytime i faced rain i always put my camera in my backpack. I thought i had a camera under warranty now i have nothing. This camera had some pros like good file size, eye detection and good dynamic range, but the body is too flimsy. Definitely not what canon says it is.