Question

I am saying you ," you have done it ."​

Answer 1

Answer :

I am telling you that you have done it.

Extra Information :

If the reporting verb introducing direct speech is in the present or future tense, the tense of the verb in the reported speech does not change.

'I am saying you' is grammatically incorrect and we cannot use this in the indirect speech. According to the rules the reporting verb generally changes into tell, so we have to use 'I am telling you..'