So you are claiming that the NSA (at all levels) lied to the House Intel committee? That's a big claim, you should back it up with some evidence. Which part of the report is not accurate?
Director of National Intelligence James Clapper told Congress in March 2013 that the NSA did not collect data on millions of Americans, just three months(!) before Snowden and Greenwald revealed the classified NSA documents proving otherwise. [0] The heads of the intelligence agencies will say whatever they need to say to get what they want. Lying to Congress and the American people is business as usual for them.
You’re missing the point. The NSA has an undeniable track record of illegal and dishonest activity that is easily googled. Nothing has systemically changed since those actions and until it does there’s no reason to place confidence in anything they say