I have seen such cases on bestchange, where exchangers endlessly demand additional data and do not return the coins for years.
Strange logic. You have seen similar cases on this aggregator; nevertheless, you choose an exchanger from its list and exchange the whole thing. Moreover, the duration of its work does not seem long(8 months), so you can trust both experience and reviews. On bestchange, there are exchangers that have proven themselves for 8 years, isn't that worth trusting?