good protection, followed by very bad / restricted operating function

I bought the silicone case for my new HTC Wildfire S to protect it against drops. For the Case is super useful, because it is very thick and stable material. When mounting it is realtiv stiff and little beigsam so much tactfulness is. The protection then is super !! The design and design selection appeals to me very much.
However, and that bothers me massively and makes the poor Rezesion from, I now need significant more power in your fingers to operate the on-off switch, or the Tonregulation can hardly merh use because the Case covers these and from a kind of silicone button has replicated, the not quite meet the real key. Unfortunately, the supplied protective film for the display in usual operation with your fingers quickly verkrazt.Allem in all, rather disturbing and annoying ....