Free gas coupons with $600 purchase or more

I was told by the company Firestone Automotive that if I spent $600.00 or more, that I would receive $40.00 in gas coupons by US mail. I never recieved them after I paid in full over $600.00 in their bussiness. They gave me this phone # that says they are not there, to go to website www.programstop.com/ So I find this to be a rip off fraud of some sort. They gave me this phone # to call 1-800-475-1942 they called it Budget Saver. Please help me, this is wrong of Firestone Automotive Company, they have lost me as a customer!! thank you. Betty Pearson 865-300-6409