I have been cooperating with them because i needed this Funds to clear my shipment from the port.
[...]
I'm hugely concerned about this part.
By "shipment", were you talking about buying small packages like online shopping from Amazon etc. --although I doubted it, judging from the value of the money you mentioned here-- or an FCL/LCL shipment? If it's the latter, especially if the payment term is FOB --or worse, EXW--, maybe if it's possible, you'll want to start considering to arrange to send the goods back? Given how long will this refund process from Freewallet --if they'll ever-- could take, I can't imagine how huge will the bill incurred from THC, demurrage, and storage and other late fee. The possibility of detention charge as well.
Or, at the very least, wrote an MOU or arrange something with your original seller that you'll pay them after certain amount of time, an L/C perhaps? Not sure if you still can do L/C after the product is already on your port, though, but do everything you can to take that container out of the port. The fees themselves would drain you immensely if you waited for the fund from freewallet to be liquidated.