Employxpert — ZERO Response after One or two months from the date of payment

I was convinced to try for new opportunities by Employxpert team. But soon after payments, things started getting different. I paid almost 20K via their webpage.

After a month's time, there was no response for my mails/calls and from November my mails started getting undelivered.

I am looking for my refund amount since then.

The response was:
The recipient server did not accept our requests to connect. Learn more at https://support.google.com/mail/answer/7720 [employxpert.com 184.168.221.88: timed out]