I purchased the certificate Dec 10 and try to use it Dec 18. The owner told me the certificate is old and he will not accept. I got the only offer from restaurant.com for $10 to exchange with $20 use. He claimed he does not have this offer. He basically refused me to use the coupon. I do not understand. I have been a customer with restaurant.com years and never have problem with the restaurant. He is rude and he makes me feel like I scam him? He told me my certificate is not valid? He said anything to discourage me to use the certificate. I feel like a fool! I told him if not for the restaurant.com, I will never know there is a mini mart here. I am angry and I think he ruined the reputation. He should be out from restaurant.com.