That's grossly misleading, of course. The truth can be found here:
RealClearPolitics - Election 2016 - General Election: Trump vs. Clinton
www.realclearpolitics.com
As you can see, the RCP Average of polls taken during the week before election day showed Clinton with 46.8% support and Trump with 43.6% support, giving Clinton a +3.2% lead--which is within the margin of error. But in fact, Clinton did win the popular vote by some ~3 million.
It isn't the case that "those people conducting those polls have been proven to be bad at their jobs," but rather that you have been proven to be bad at telling the truth.