Marks and Spencer Online

Placed an order through Marks and Spencer online ordering two weeks before Christmas. According to their website the order would arrive on Dec. 22nd. Instead on Dec. 23rd(!) I received an email in the morning saying they couldn't charge my credit card and had *10 days* before they cancelled the order. Then 45 *minutes* later, they said they were out of the item I ordered and my order was cancelled. Nothing but the normal fobbing-off platitudes from customer services: "Whenever there is a problem like this, we are always committed to putting it right and preventing it from happening again." But they have done nothing to put it right.