Ryanair have renaged on the refund request and sent useless voucher instead - Chargeback on credit card?

[JamieV]

I along with I guess almost every Ryanair customer who has had a flight cancelled by them have been stiffed by Ryanair.
They cancelled my flights and I filled in their refund form about a month ago.

Today I have received a voucher from them.
I dont want a voucher, I want my refund.
Their voucher has a 1 year expiry. Should it not be 5 years law?

And now I want to do a chargeback on my credit card.
My credit card is Avantcard. Does anyone know how I do this chargeback with Avantcard?
Is anyone else in the same situation with Ryanair?

 

[Leo]

Discussion ongoing in another thread, so I'll close this one to avoid duplication.