1. He is a hypocrite. He says one thing and does another.2. His actions do not correspond with his words.
 say one thing and do another actions do not correspond with wordssays one thing and does another 最準確的表現出「言行不一」。His actions do not correspond with his words = 他的言行不一致
I tried to explain how the software works to my dad, but he is slw on the uptake.