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I had joined the new org and I have this guy who is reporting to me, who is very hardworking and talented and very open, I had started trusting him and planned to promote him in next 6 months. But last week we had a holiday and on same day we had a conference call, it was not mandatory to join, hence I attended all by alone and answered the queries.
But this guy is claiming he has attended and resolved which is telling blatant lie in front of me.
I thought after giving hints he will accept the truth, but still this guy is adamant.
I have not told him i also attended the call and did not find this guy in call other side.
Now please guide me here the next steps.