Poloniex: Saitama Coins Disappeared After 4 Years, Seeking Immediate Refund

I had Saitama coins on Poloniex that I purchased around four years ago, and now I’ve discovered that they’ve been removed, with all quantities wiped out. I’m demanding an immediate refund of my money. I’ve never encountered anything like this; my investment has been completely zeroed out. I invest with a long-term perspective, and it’s unacceptable that my coin holdings have vanished. I expect Poloniex to restore my funds without delay, as this kind of situation undermines trust in the platform for future investments.