Very disappointed and annoyed

I placed an order on the 29th Nov. I have been trying to contact Zando for days now. I am seriously upset and totally unimpressed by the service. I have not had any update with regards to the order, until the 14th Dec when I get emails letting me know that 2 of the items ordered are out of stock and they've given me vouchers. I paid with cash not vouchers, I want my money back not vouchers. If I could actually get through to someone I would like to cancel my entire order and get a full refund. The worst online store.