Game: Repair over time limit. No help from customer service.

I've had a very disappointing expereince with Game at Brooklyn Mall. I bought an expensive steam iron in February and was told it would be worth the extra money in terms of superior performance and durability. It lasted about 6 months. I was told it had a 2 year warrantee, so I returned it to the store. I was told it would have to be sent in to be repaired and that it wouldn't take longer than 3 weeks. On the repair agreement which I had to sign it stipulates that "Should it take more than 21 days, the item will be replaced or refunded." Further on it stipulates: "If you have not accepted or rejected the quoted repair charge with 10 calendar days then the item will be disposed of to defray expenses."

I took the returned the iron on 19 September and now it has been more than 21 days and I still haven't got my iron back. The store says it is supposed to say 21 working/business days but the repair agreement does not stipulate working days or not except further on on another point it stipulates calendar days. The store says I should have my iron my next week. I phone customer car but they were unable to help me, stating I should take it further with the store. But the store just says I should wait. Should I expect Game to keep to their own rules as stipulated on their repair agreement? Or should it be ok for Game to change their mind and just expect the customer to wait a month for the item to be repaired?