Lost past

I was expecting a parcel from China since Feb this years and it never reached my sight all I got from the post office is that a container where my parcel was got missing and they will investigate I have sent more Thn 100 emails trying to get a solution bt m not winning.... Very disappointed with their negligence how can a big truck /container just vanish with goods worth a fortune... Poor poorest service I ever experience... I am looking for help still coz I want them to refund me...