Did Omega issue you with an ATOL certificate when you booked? They have for all mine in the past.
Assuming so, and if the company is insolvent and your ticket has not been issued or is cancelled, you will get your money back in full from ATOL. You will not however be entitled to replacement flights, assuming you have not yet flown outbound.
Note, if a ticket is sold with ATOL protection it can still in theory be cancelled post-issue if unpaid by the agent. A ticket should not be sold without ATOL protection if the airline has the right to cancel it if the agent fails to pay.