Airports Authority of India — Complaint against IndiGo

On 3rd of June, I encountered on the Indigo flight at Mumbai airport at 5:55 AM. My luggage was checked in and upon arrival at the Lokpriya Gopinath Bordoloi airport (Guwahati), my luggage was not seen. At the top of my suitcase, Faruque A. Khan was written.
I have sent several complaints but i haven't received any response. Kindly look into the matter as it contains very important documents.