Luggage lost with MSC cruise Preziosa Brazil - no feedback from MSC after 7 days and quering this MSC tagged te bag but did not give me my bag at the end of my trip.

I have been on a cruise - flew from Sa to Brazil on cuise ship Preziosa, from 23 to 29 December. Cruise was good but when we disembarked one of my bags was not there when I collected all the other bags and becasue the flight was the same day we had to male our way to the airport . My bag had my room details and my contact details on their. When I got back to South africa I lodged the query with customer care and they said within 72 hours I would get feedback. No feedback from. Anyone to this day and I call th3 customer care line and they couldn't have either. Today is the 6 Jan I lodget the query on the 30 December. No response. All I want is my bag. Does MSC associate themselves with dishonesty and theft? Where is te sense or urgency is assisting cruise members especially if they traveling far to cruise with them- Brazil the language barrier was an issue no one speak English. No one assisted me I had to come back to my own country to lodge this query. My bag could not be missing as I labeled 4 bags to be take from my 2 cabins and only got 3.