Join Date: Aug 2011
Location: Barcelona, London, on a plane
Programs: IB+ Gold, TK E+, Hyatt Globalist, Marriott LTP, IHG Diamond
Posts: 14,182
The "good news" is that MCOL will probably award you the entire cost of Easyjet (rather than the difference) if VY insist on a voucher instead of a proper refund.
Then you might still be able to use the voucher, if you're ever inclined to give VY another chance.
It will all involve some aggravation and effort unfortunately...