Class camera with enormous production diversification

I have this camera ordered from Amazon.com and found after a while that the lens is not in order. The barrel of the zoom lens, the one by zooming and extends as an unusually high game in the lens housing. Even while wearing the camera around your neck you saw a "rattle".
After complaining and preserving a new camera the same problem again. I have then worried a camera commercially to test the lens before buying. At home, I have found a problem with the camera housing. The on / off switch was unusually stiff. So again Exchange.
Only after that is 4. device! in order and provides a more familiar Canon Quality. To the lens-problem I have now the telephone confirmation that it was aware of the problem and the objectives of "IS STM" series have very often from Canon Service this problem.