Unable to withdraw. The customer service did not reply

May 31: Apply for withdrawal
June 1: Sliverrest said that its server was hacked and took a long time to review. Then he asked the Wall Street investment consulting company. He said that the original assistant had left and would assign a new assistant to follow up. During the period, he kept asking about the progress of the fund and only answered that it was under review.
July 1: Slivecrest's line customer service and e-mail are not read or returned at first.
September 9: The line customer service of Wall Street investment consulting company did not read or reply at first, sent e-mail to its customer service, and only replied to the email notification of preliminary results.
October 6: Wall Street assistant line began not to reply.
October 15: E-mail messages sent to Wall Street customer service inquiries were blocked and could not be sent to their customer service mailbox.
October 20: It is required to receive the withdrawal within a limited time. If it is not received, it will be reported and complained. The wall street line customer service will reply to the inquiry, but there is no follow-up. So far, the withdrawal has not been received.
It has been half a year since the application for withdrawal was made, and the customer service of sliverrest and Wall Street investment consulting company has not replied, so they can't contact each other.