DON'T ACCEPT THE VOUCHER IF *YOU* CANCELLED! They don't have a legal leg to stand on. Their argument of "we're not going to honour the refund clause of your contract because we're also not going to enforce another clause" is total nonsense. Their force majeure clause does not apply when you already cancelled. Accepting a voucher is effectively you loaning then money. They'll very likely go bust soon and your voucher will become worthless. You may then have trouble getting the money back from credit card / bank because you accepted the change from a "service" to a "voucher". For this reason in particular I implore all customers who cancelled themselves to NOT ACCEPT THE VOUCHER. Reject the voucher and insist on a refund under your terms. They cannot change the terms of an already agreed contract (however "fair and reasonable" *they* might think the change is). If they stay afloat and don't refund then apply to small claims court (easier than you think). If they go under then go to your bank / credit card. Above all, don't let them use customers as a bail-out loan fund. Refusing refunds isn't that different to price gouging!