Bad experience with the Epaymachine.com!

We successfully processed Visa with Epaymachine.com for 6 months and everything seemed to be good until the time came to start paying back our rolling reserves. Unexpectedly their acquiring bank stopped accepting pharmacy and froze all our money. And here are our problems started. It became almost impossible to reach anybody from the company either by phone or email.Their support simply ignored our messages.
We waited 180 days since our last successful transaction and tried to contact Epaymachine again in order to solve this issue in a friendly manner without involving any third party legal entities, but they kept ignoring our emails and phone calls which assured us that our money would never be paid back to us.

Has anyone experienced something similar in their business?

Would appreciate recommendations of legal entities who specialises in such fraud issues.