Unstable construction

I must start by saying that I certainly am no genius craftswoman, but I already have one or the other installed in our household. I bought this shower curtain rail, because I wanted to barrier-free run for the curtain. It worked fairly well for the arduous installation. The Plastikösen for the curtain, however, are more difficult to move over the metal rail. Worse is that the connection between ceiling mount and rail is only a plug attachment. That is, if the rail depends more by weight or something train at the curtain for under and then moisture comes into the metal, she slips out again. That's since the last week, since the track is now installed at us so often happens that now the plastic wall mount has given. In addition, the threads of the connectors for the individual tracks were drilled unclean. This I could not tighten two screws. This kept the rods together but not good.
In short, quite a bad buy.