Hi Rajesh,
Denying the communication from the copmany also amount another misconduct.
Counsel the workman that he is not doing right thing and which may go further agasint him. Explain him that denying the communication will create him further problems.
Still he does not accept the chargesheet, ammend the chargesheet adding the clause of denial of communication and add this also as a misconduct. Once you do the same, send the chargesheet at his residance by registered A/d, UPC and Courier to ensure the delivery.
One copy of the chargesheet can be displayed at Notice Board.
Regards,