No idea Andrew, BUT phone the company you bought them from and tell them what has happened and they will send you a fresh order.
This happened to me last week with an order from T & M, i did the above and a new order is on its way. Firm but polite works wonders. Mind you T & M are superb with there customer service. Go on give it a try , let me know how you get on. Cheers Rosebud.