Can I get my money back from CeX?

Excuse me, I'm curious about something regarding CeX. I recently made a transaction with them involving cryptocurrency, but now I'm having second thoughts. I'm wondering, is it possible to get my money back from CeX? I understand that cryptocurrency transactions can be irreversible, but I'm hoping there might be some sort of exception or policy in place that could allow for a refund. Could you please elaborate on the refund policy of CeX when it comes to cryptocurrency transactions? Thank you for your time.