I usually buy my gas at Shell. There is signage at the pump and on the receipt that says something like this, “$10 off the purchase of 5 quarts of Pennzoil Platinum at AutoZone.” I thought, hum good idea. So I went to AutoZone, got my 5 quarts of Pennzoil and went to the counter. The clerk said, “We’ve seen a bunch of these, but we haven’t received instructions on how to process the coupon. Sorry.” I put the oil back on the shelf and left. Today I called Shell, more than anything to tell them that half of their co-operative marketing campaign wasn’t working. I spoke with a gal in the marketing department who transferred me to “customer service” faster than you can drop a hot potato. After I explained the issue to Peter at least 4 times, I didn’t care anymore. Peter assured me he would have the convenience store manager where I bought the gas call me. I told him to have someone call AutoZone, anyway…I can buy it cheaper at WalMart.