So now the elder has texted back and said he meant Thursday. Said "sorry his bad". Sheesh.
He's manipulating you by pretending he meant another day so whatever day you said you couldn't make it he would change it. What does this tell you?
This 'sort of' friend lied to you. If the CO pushes you into a corner with a 'do you still think the FDS are God's representatives on earth?' question, be sure if you answer in the negative your 'friend' will be on the JC that disfellowships you, even if it's in your absence.