Hold my boxes over 1 yea 8 months and threaten to dispose & sell them if I don't clear the unauthorised storage fee

They don't even worth any star! RUN from this company!!!! My cargo was hired on 23 July, 2019 to ship a small cube with boxes from Singapore to New York. The total bill was SGD$1259 and I paid $300 upfront. They collected my boxes then refused to ship due to my previous visa's remaining days was shorter than their request. They soon forced to put my boxes to their storage and started topping fee without my agreement. The bill ran up insanely to SGD3254.53. In between I explained my visa situation with pending proof from USCIS and attorney. I told them should just ship so the result should come out when it arrives to within their request dates, but the application dragged 10 months til last June, which was unexpected and out of my hands. After 1 year and 8 months now, they're still holding the boxes even my new visa has already passed and issued. I have over months of emails back and forth with them to explain my visa or financial situation and asked them to honoured the contract, but they refuse to ship still. They even threaten to dispose and sell my belongs with record of emails from their manger. I have all emails of conversations that are considered black and white for courts and am totally fine to expose online. I will post this story in different languages on platforms plus ask help of companies wherever they base to make this known to people online so they can take my lesson and stay far from you.