Lost case

I bought an Item from NewChic, Buffalo is their logistics company, according to NC I should have received my parcel by 15 December 2020, I already paid import tax on 15 December, early morning. I had a fall-out with a Bianca since I needed the parcel by no later then Wednesday 23 December 2020 since I am leaving early morning on 24 December. Nothing has been done, matter of fact they choose the longest time to ship it to me... via Paxi 7-9 days!!!!