I received a $500 free gas voucher in november for the purchase of four new tires at Tire Kingdom. The voucher was actually the reason I decided to buy the tires at Tire Kingdom. The instructions were simple; I was to mail $100 in original gas receipts per month at a selected gas station (Shell), and in turn I was to receive a $25 gas gift card for that month. I have been mailing receipts in since November and have not recieved a SINGLE gift card. Even worse, my emails were ignored and their customer service line is not in service. I had NO... read full review »