Indian Post — missing of registered mail

Dear Sir,

I sent a registered mail from saudi arabia to Chennai on 19th Sept 2017 but till today it didn't reach at my home.

Tracking record shows as EDI-received at mumbai airport sorting office. But no information on mail from both country postal service. Saudi claim as they sent on 25th Sept to India.

Please help me to know the correct status.

Regards,
Lakshmikant