Well it wasnt much of a deal anyhow, at least not here in northern california as the shell gas was ALWAYS more than 5% more expensive than other stations.
Further, they used to offer free car washes with a fill up and all the stations around here recently installed new car wash "systems" and the freebies are out the window.
I cancelled my shell card about 3 years ago because twice they received my payment a day or two late and suspended the card, which I discovered when I went to use it to check into a hotel room. Bear in mind I have nearly perfect credit and had been a customer of theirs for a number of years, charging 25-30k a year and almost always paying the balance off monthly. When I called to find out what happened they said "oh, your payment was a day late but I see we have it now so you'll be able to use your card again in a day or two". After confirming this was their standard customer handling procedure I let them know not to go to the trouble of reactivating the card, that they'd be receiving it in many, many pieces.
Costco and Sams club gas ever since. At least 10c cheaper than even the cheapie stations.
Buh Bye Shell.