bought four tires for my van during tire kingdom's promotion promising $500. worth of gas issuing $25. certificates each month when they receive your $100. gas credit slip vouchers. have complied with all their requests since december, 2008 . my latest letter was returned to me because they do not have a forwarding address, nor is the phone working. i could have bought my tires anywhere, but chose tire kingdom due to this offer. this company has supported this scam.