This is not "article I ordered

The item I received does not correspond in its dimensions, the one I had control connectors therefore is of no use to me, and I wish the company that sold it to me, for your intermediary, makes a return impossible.Pour me it is like a scam because the error is not my doing, and I can put this product directly to the trash (in fact to the recycling center because there must be a recycling for this type of plastic ...)
I do not understand that we can not take me this article from this error (which is, again, not my doing)