In reply to jonnie3430: Can you take them back to the shop where you bought them? 11 days' use and worn out is not 'usual wear and tear'. The shop should be able to exchange them for a new pair.
I had a similar problem years ago with a pair of Salomon Pro Ice boots from Ellis Brigham. The rubber sole at the toe wore down after only a few days' use, then wore into the plastic crampon notch, meaning they'd probably have only been capable of holding crampons securely for another couple of trips out. I took them back and they sent them off. A brand new pair came back, and I am still using them - the toe areas are still fine after about 8 years! I put it down to poor rubber/construction at the toe in the first pair. Sounds like you've been unlucky with a similarly dodgy pair