Why witness about a name of God you know and admit is false ?
Every Bible based name in English is not pronounced quite like it's original language version. That doesn't make them false. For example "Yehoshua" is our Jesus in English but Jesus in Spanish it's prnounced with an H sound, "hay-SOOS" and in English "DJEE-suhs".
To say that Jehovah is a false rendering is incorrect.